He helped sink one of Joe Biden’s labor nominees, pushed the president to open new drilling in the Gulf of Mexico and hammered the administration over lifting pandemic-era restrictions on the southern border.

No, it’s not a Republican. It’s Mark Kelly…

Though Democrats are used to Sinema and Sen. Joe Manchin (D-W.Va.) bucking them, Kelly’s vote against David Weil to be wage administrator for the Labor Department shocked party leaders, according to one Democratic senator supportive of the nomination. And his criticism of Biden’s approach to the southern border only grew louder after the White House reversed the Trump administration public-health order known as Title 42, potentially clearing the way for more immigrants seeking asylum to enter the country.

“I tell them when I think they’re not getting stuff right, like in this case. There’s no plan,” Kelly said in an interview, referring to the Title 42 rollback.