Spines are back in vogue in DC.
Surprise, surprise! All you Pelosi haters: Who would guess the biggest balls in Washington belong to a 78 year old White woman.
In all fairness, Trump thinks HE can shut down the government and does not realize that Nancy Pelosi is the one person who will actually be able to do that come January. As Speaker, she controls all the money, not the President. He can shut down some Executive branch offices by fiat, but Congress can continue without him. If they pass bills by a veto-proof majority, his veto power doesn't matter. And anything really important, they typically do pass with near unanimity.
Effectively, all he can do is to shutdown Homeland Security, ICE, and the Border Patrol, and let the caravans cross unmolested!