This was all about politics, not about hurricane relief by either side. So nobody should delude themselves with that.
The Republicans wanted a debt-ceiling deal that would slide the issue through past the 2018 election as their party tends to crack badly when the issue comes up. So tack it onto something popular like hurricane relief, get past the elections, and then deal with it.
The Democrats wanted the debt ceiling to be an issue that caused damaging infighting that crippled the Republican Congress and maybe even a government shut down right as the 2018 elections came up. And they certainly didn't want to say no to popular hurricane relief.
The White House, apparently, had been saying it was going to hold the line with the Republicans and then back stabbed them.
Why?
We won't know for a long time, but I suspect that this was a combination of petty revenge for Trump and an attempt to get the GOP to do his bidding. During the Healthcare fail, Trump repeatedly attempted to tell the Republican Congress what to do and how to do it. They being experienced politicians, paid lip service, and then went about business the way it was supposed to be done. Trump has next been telling them to deal with the Dreamers the way he wanted instead of the way Congress worked.
This disconnect, Republicans in Congress having to pass legislation in certain ways and Trump either not accepting or understanding that, has led to
a public fight with Trump and congressional Republicans. It has gone so far that Trump has implied that the
Congressional Republican leader, Mitch McConnell, should step down.Which brings us to today.
So it seems reasonable to me to assume that Trump is trying to use force against the Congressional Republicans.
Congressional Republicans won't get the message though as the message is stupid. Mitch McConnell (as much as I dislike him, and I think he's worse than Trump) isn't a dictator, he has to make deals and carry districts as Congress is specifically designed to be slow and complicated.
Alis Volat Propriis; Tiocfaidh ár lá; Proletarier Aller Länder, Vereinigt Euch!