Maybe they can find the prisoners they supposedly released.
Check it out:

Capitol Hill is moving quickly to engage with Cuba after President Barack Obama’s major diplomatic and economic policy changes toward the island nation.

This weekend, the first congressional delegation will visit Cuba since Obama’s December diplomatic shift. The visit to Cuba will be led by Sen. Patrick Leahy (D-Vt.), who also flew to Cuba last month to bring back freed prisoner Alan Gross.

Leahy will take five other Democrats with him: Sens. Dick Durbin of Illinois, Debbie Stabenow of Michigan and Sheldon Whitehouse of Rhode Island; and Reps. Chris Van Hollen of Maryland and Peter Welch of Vermont.