Sen. Claire McCaskillClaire Conner McCaskillKoch-backed group targets red-state Dems on tax reform Overnight Cybersecurity: Equifax security employee left after breach | Lawmakers float bill to reform warrantless surveillance | Intel leaders keeping collusion probe open Las Vegas highlights Islamist terrorism is not America's greatest domestic threat MORE (D-Mo.), who's been traveling Washington this week with her daughter who's on spring break, thought about helping out Sen. Michael BennetMichael Farrand BennetAmeriCorps hurricane heroes deserve a reward — don’t tax it Joe Buck defends 'nonviolent protests' at NFL games Patriotism is no defense for Trump’s attacks on black athletes MORE (D-Colo.) at lunch.

"Lunch w/Lily in Sen dining [room]," McCaskill tweeted. "Sen. Bennett at large table surrounded by journalsts. Don't know [whether] to say congrats or try to save him."

Bennet, of course, is serving his first term in Congress after having been appointed to fill the Senate vacancy left by Interior Secretary Ken Salazar.