This afternoon a bipartisan group of senators are expected to lay out the proposal that they’re been negotiating among themselves since the election for comprehensive immigration reform. The group includes Sens. Charles Schumer (D-NY), John McCain (R-AZ), and Marco Rubio (R-FL). The proposal will be consistent with the general approach to reform that has the best chance of securing enough support to pass — and is a starting point for negotiating a deal that can pass the House. Then, on Tuesday, immigration reform is the focus of President Obama’s trip to Las Vegas.