Sen. Susan Collins took issue Thursday with Majority Leader Mitch McConnell’s decision not to accept the White House’s speedy coronavirus tests, worrying in a private lunch with GOP colleagues that untested senators could become “super-spreaders” when they return to their home states.

Driving the news: The pushback was part of a broader airing of concerns in today’s Republican Senate lunch, in which McConnell defended the political necessity of his move, according to several people familiar with the discussions.

What they’re saying: McConnell told colleagues at the lunch that he wasn’t opposed to the idea of accepting Trump’s offer of the White House giving the Senate access to fast-track Abbott Laboratories tests.