“A huge argument broke out at Senate Dem meeting last week over BDS,” he tweeted. “A significant number of Senate Democrats now support #BDS & Dem leaders want to avoid a floor vote that reveals that.”

But there is no evidence that any Democrats in the Senate support BDS; every one who has taken a public position on the movement has opposed it. Sen. Chris Murphy (D-CT) called on Rubio to take down the tweet, telling his colleague that “you know it isn’t true.” And a senior Democratic Senate aide disputed Rubio’s characterization of the Democratic meeting last week about the bill, accusing Rubio of having sour grapes about his bill’s failure.