Sen. Claire McCaskillClaire McCaskillManchin: Sanders backers should challenge me in Dem primary The DNC in the age of Trump: 5 things the new chairman needs to do A guide to the committees: Senate 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 BennetA guide to the committees: Senate Senate advances Trump's Commerce pick Senate Dems move to nix Trump's deportation order 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.