EXCLUSIVE — Republicans will head to the White House on Thursday afternoon for another classified briefing with the Secret Service as the Trump administration intensifies its push to salvage a controversial $1 billion security funding request facing growing Republican skepticism on Capitol Hill.

A source familiar with the meeting told the Washington Examiner that lawmakers will hear directly from Secret Service Director Sean Curran, Secret Service Chief Operating Officer Christopher Toms, and other senior members of the Secret Service leadership team about why the money is needed.