Holding out on that is the only leverage available.

Manchin wants to be seen a 'good Democrat' in his Appalachian state, and to be that 'good Democrat' he has to oppose what all those bad DC liberal socialist democrats want to do.

Sinema I do not attempt to explain. In office she is doing the dead opposite of what she claimed she'd do in her campaign, and in previous political endeavors for many years. While she does, she seems to be rolling in money donated by persons she was spitting at just a couple of years ago.