Throughout his re-election campaign, President Barack Obama promised that overhauling the nation’s immigration laws would be at the top of his legislative agenda should he win a second term. Now, with that second term under way and momentum for reform building, the legal community is sitting at attention.

In a speech Tuesday at a Las Vegas high school, the president addressed what has been a knotty political issue. The speech came a day after a bipartisan group of U.S. senators crafted a package of proposals that includes both stricter border security and a pathway to U.S. citizenship for the millions of illegal immigrants now residing in the United States. Obama praised the group’s proposals but challenged Congress to act swiftly on immigration reform.