The Brief

Four million acres of California’s wildest backcountry could soon be opened to paving roads and logging.

The Trump administration announced last week that it’s pushing forward with a proposal to scrap a 2001 rule that blocks logging, road building and other construction in parts of national forests. The administration argues repealing the so-called “roadless rule” is key to managing vegetation to better prevent wildfires on public lands.

Environmental advocates and other groups worry rescinding the rule would harm pristine habitat and the wildlife it supports, and open up more public land to industrial activities and human access that can cause more wildfires.

And locals are worried about losing access to some of the last protected natural lands in the region.

“What we're dealing with here in the roadless rule is the protection of the backcountry,” said David Browning, president of the Orange County Mountain Bike Association, “where you can actually go out and be having an experience where you don't hear traffic, where you don't see buildings, where you actually remember what it was like before all of us got here.”

In Southern California, large swaths of the Los Padres, Angeles, San Bernardino and Cleveland national forests would lose protections.

Browning, who spoke with All Things Considered host Julia Paskin on Monday, said he’s particularly concerned about the Santa Ana Mountains, where much of Orange County’s backcountry biking trails exist within a roadless area that could be opened to construction.

“Our mission is to protect and expand trail access, and so our entire agenda is to make sure that in a highly populated county, like Orange, that we have available the outdoors to be able to go and enjoy,” he said.

Browning takes issue with the wildfire argument — he pointed to the 2024 Airport Fire, which was sparked when heavy equipment operated by Orange County employees struck a rock. They were moving large boulders that day to, in part, block vehicles from getting into a dry brush area and potentially starting a fire. Browning said the “roadless rule” prevents such access that could increase the risk of fire. A recent peer-reviewed study supports that, finding that although roads are important for managing a fire once it ignites, they’re also more likely to be a place where a fire starts.

Though addressing wildfires and protecting public lands have become heavily politicized under the Trump administration, Browning thinks most locals probably aren’t as divided.

“ I don't think this is a party issue,” he said. “We want to hold onto the outdoors and protect them as best we can.”

There unfortunately isn’t much respite in sight for heat-weary Southern Californians.

Forecasters say this week’s heat wave is likely to be the hottest so far this summer. Extreme heat warnings will be in effect from the National Weather Service for almost the entire region from Tuesday morning through Friday evening.

Temperatures will peak between Tuesday and Thursday.

Highs in downtown Los Angeles are expected to reach around 100 degrees, and the warmest inland valleys will get up to 112. L.A. County beaches will hit the high 80s.

Forecasters have also issued Red Flag Warnings for the interior mountains and foothills of Los Angeles, Ventura and Santa Barbara counties. Gusty winds and low humidity at higher elevations mean fires could spark and spread quickly.

At lower elevations, humidity continues to make the heat feel more sweltering and make it harder to cool down, especially at night. Nighttime temperatures will only get down to the 70s in most places, including along the coast.

A slight cooldown is expected this weekend, though forecasters say temperatures will stay above normal into next week.

The extreme heat this week poses an especially high risk of heat-related illness for people over 65, young children, people who work or spend a lot of time outside and those without access to air conditioning.

Driving the heat

Several factors are behind this week’s heat wave, many of which have also been behind the rest of this summer’s consistently hot weather.

The main driver is a high pressure air system hovering over the southwestern U.S., trapping warm air, compressing it and warming it further, and blocking cooler air from entering the region.

Offshore winds are also pushing warm inland air toward the coast, preventing cooler onshore winds from blowing inland.

“That blocks our natural air conditioning off the ocean from coming in as early as it normally does,” said Weather Service meteorologist Mike Wofford. “So as long as that cool air stays offshore, it heats up on land.”

The offshore winds are not strong enough, however, to significantly dry out the air in the L.A. Basin and cut down on the humidity.

“That's probably going to be around for the whole summer because you’ve got all this warm ocean water that's feeding into that,” Wofford said.

Warmer seawater evaporates faster, adding to moisture in the air and increasing humidity across the region, especially along the coasts.

Air quality warnings

Along with the heat this week, many Southern Californians also have smog to worry about.

The South Coast Air Quality Management District issued an ozone advisory on Monday for inland areas of Los Angeles and Orange counties, much of Riverside County and parts of San Bernardino County. It will remain in effect through Friday evening.

The multi-day smog event is in part driven by the heatwave.

Officials say ozone pollution may reach unhealthy levels or higher in the Santa Clarita Valley, parts of the San Gabriel and San Bernardino valleys, and portions of the San Bernardino Mountains.

Under unhealthy levels, it’s possible for anyone to experience adverse health effects like difficulty breathing and throat irritation. Sensitive populations could experience more serious effects.

Levels are expected to be unhealthy for sensitive groups in the San Fernando Valley, Perris Valley, Mission Viejo, Lake Elsinore, Corona, Hemet, Riverside and Pasadena.

Officials advise certain vulnerable groups — including people with heart or lung disease, those with asthma, pregnant women, children and people over 65 — to limit their time outdoors.

Officials predict that ozone levels will be lower along the coast.

The Supreme Court has paused a lower court's ruling that blocked key directives from President Trump's executive order to restrict mail-in voting for this fall's midterm election in about two dozen states and Washington, D.C.

But with the start of absentee voting for the midterms just weeks away, legal and practical hurdles loom over whether the U.S. Postal Service and other federal agencies can finish carrying out Trump's directives.

Released Monday, the order marks the latest court action in the legal fight over Trump's March order — one of many efforts he has made to try to exert control over how elections are run.

As part of a separate but related lawsuit, the U.S. Postal Service remains blocked from following Trump's directives under a nationwide ruling released Aug. 11 by U.S. District Judge Indira Talwani in Boston.

The Supreme Court did not weigh in on the legality of Trump's executive order, which has so far not directly affected eligible absentee voters' option to cast ballots by mail.

In June, Talwani issued an earlier ruling that blocked key parts of Trump's order in the 23 mainly Democratic-led states, plus Washington, D.C., that sued the administration.

Trump's order calls for the Department of Homeland Security to develop state lists of adult U.S. citizens and for the Postal Service to obtain lists of eligible mail voters from states. According to the order, USPS is supposed to deliver mail-in ballots only to people on those lists. All election officials would also be required to have certain barcodes on their mail ballot envelopes.

The Postal Service has released a final rule for federal ballot mail in response to Trump's order.

Trump — who himself voted by mail as recently as this year in Florida — has said he issued this order to stop illegal voting by non-U.S. citizens in federal elections, which research has found to be infinitesimally rare.

Talwani's June ruling concluded Trump overstepped a president's authority under the Constitution, which gives power to state legislatures and Congress to set federal election rules. USPS, which is independent of a president's administration, also has no legal authority to control mail-in voting, the judge found.

The Supreme Court has now granted emergency requests from the administration and 12 Republican-led states to pause the judge's June ruling in 23 states and Washington, D.C., while not weighing in on the legality of Trump's order.

It remains unclear what impact the high court's order will actually have on eligible mail-in voters.

The legal fight is likely far from over, with a separate set of lawsuits led by Democrats and voting rights groups continuing to play out as this fall's election draws closer.

The administration has previously acknowledged the shrinking window of opportunity for the administration to implement Trump's order for this year's midterms. In a July court filing, U.S. Solicitor General D. John Sauer noted that there may not be enough time to resolve the legal challenges through the appeals process with the courts.

"That is especially true because implementation efforts for any USPS rule or DHS policy will need to begin well before November—indeed, as soon as early to mid-August—to be effective for the 2026 election, particularly given that absentee and mail-in voting begin (in some States) several weeks prior to Election Day," Sauer noted.

Editor's note: USPS is a financial supporter of NPR.

Edited by Benjamin Swasey
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