The Senate Foreign Relations Committee is set to vote on President Donald Trump's secretary of state nominee, Rex Tillerson, on Monday. Sen. Marco Rubio (R-Fla.) could potentially upset a smooth nomination process if he decides to vote "no" on Tillerson; while Rubio's no vote wouldn't concretely stop Tillerson from being confirmed, it would send him to the Senate floor without a positive recommendation, an "embarrassing rebuke to Trump just as his presidency gets underway," Time writes. Rubio stood up to Tillerson on the issue of Russia and human rights earlier this month, but other top Republican senators, including John McCain (Ariz.) and Lindsey Graham (S.C.), have, after some deliberation, announced their support of the former ExxonMobil executive.