Today almost 200 mayors from across the country are gathered in Las Vegas for the 81st annual conference of mayors.  These leaders are discussing all sorts of issues, from school safety to energy efficiency. But one of their top priorities is immigration. 

Phoenix Mayor Greg Stanton is leading a delegation of mayors who hope to help shape the debate in Congress by providing a local government perspective on the need for immigration reform. 

For more on this we're joined now live by Mayor Stanton.