Republicans are both corrupt and stupid, so it's hard to tell which one animates their opposition to the wall. But the Democrats are bluffing. They're trying to get the GOP to fold before they show us their pair of threes.
Now that Trump has capitulated on even asking for funding for a wall, the Democrats are on their knees saying, "Thank you, God! Thank you, God!"
No politician wants to have to explain a vote against the wall. What the Democrats want is for Trump to be stuck explaining why he didn't build the wall.
Then it will be a bloodbath. Not only Trump, but also the entire GOP, is dead if he doesn't build a wall. Republicans will be wiped out in the midterms, Democrats will have a 300-seat House majority, and Trump will have to come up with an excuse for why he's not running for re-election.
YEP! 100% correct.