Senate Republicans are gearing up for negotiations with Democrats to fulfill President Trump’s request for a southern border wall, but have yet to decide exactly how much money they’ll push for in a year-end spending deal that will dominate the post-election “lame duck” session.

“That’s the central question right now,” Senate Appropriations Committee Chairman Richard Shelby, R-Ala., told the Washington Examiner Tuesday, when asked about the wall funding figure as lawmakers returned for the lame-duck session. “We ought to try to resolve it. I’m going to try to meet with the president and the leader and we’ll see.”