Self interest so he can get elected again. Timing is everything in politics. The partial government shutdown was just the first step which his strategists knew would end in no deal. Next step will be taken soon and run its course through the year, a theme that will galvanize his base. If they they negotiate a deal in the coming weeks, Trump may pressure democrats into another government shutdown or call a national emergency. If need be, he will drag this our throughout the year so he looks like a fighter to his base who like a bit of red meat. While the democrats will be viewed as obstructionists by the white xenophobic racists that elected Trump. Anyway, the democrats deserve it, they are part of the same rotten government. Makes no difference who is elected in the U.S. It's really a one party system designed to marginalize political diversity and maintain the status quo.I like Trump and all but why didnt he build the wall when the republicans had all the power for 2 years? This reminds of when FPM had 10 ministers in the government and blamed the government for not being able to do shit.
Anyway, this is all bullshit and posturing. The U.S. should be run over by all of Latin America for the way they have abused their power with their neocolonialist foreign policy. Not surprising considering they built a country with mass slave labor over the countless unmarked graves of the natives they slaughtered to near extinction.