- He returned to work in Washington before flying home to Vermont
- Sanders has kept busy the past few weeks
The former Democratic presidential candidate returned to work in Washington after the hour-long procedure and later flew back to Vermont.
Sanders, 75, has kept busy the past few weeks and has emerged as a leading critic of President-elect Donald Trump. The senator blasted Trump's pick of Rex Tillerson for secretary of state, calling the decision "very dangerous," and on Saturday, Sanders tweeted that the President-elect was "a pathological liar."