I sincerely don't want to enter the pro- or against-Trump discussion (I don't care too much...), and at the same time I don't want to sound too aseptic toward the situation that Americans are going through. Forgive me for any political tone I couldn't remove from the following question!

I'd like to understand - sincerely! - how such a move can be justified even at a political level. Bloomberg proposes a "rebuff" of Republicans against Trump, but they're paying this rebuff with the anger of millions of Americans that won't receive this money if not for this kind of childish behavior.

So there should be some thing I am missing, I'd like to understand better: what's the justification for such a move, beyond playing this strange game?