President Donald Trump says Republicans are "wasting their time" trying to negotiate with Democrats over border wall funding. And he says he doesn't "expect much help" from Congress in getting it built.Trump's comments on Thursday came the day after Democrats offered no money for Trump's long-promised wall during the first day of congressional talks on border security funding.Trump last week signed a three-week deal to reopen the government, giving Congress time to try to hash out a deal. He's threatened to declare a national emergency to circumvent Congress if they fail to reach a deal he can sign.But Trump already appears to have soured on the process.He says, "Democrats, despite all of the evidence, proof and Caravans coming, are not going to give money to build the DESPERATELY needed WALL."Republicans on the Homeland Security Committee are wasting their time. Democrats, despite all of the evidence, proof and Caravans coming, are not going to give money to build the DESPERATELY needed WALL. I’ve got you covered. Wall is already being built, I don’t expect much help!— Donald J. Trump (@realDonaldTrump) January 31, 2019 But he adds: "I've got you covered. Wall is already being built, I don't expect much help!"President Donald Trump is again adjusting his rhetoric over his proposed wall along the US-Mexico border.As congressional negotiators opened talks on Wednesday on border security funding, Democrats offered no money for Trump's wall. Republicans angling for compromise have shifted from using the word "wall" in favour of the word "barrier".Trump used all capital letters in tweets on Thursday as he addressed the rhetorical shift: "Lets just call them WALLS from now on and stop playing political games!" He says: "A WALL is a WALL!"Nevertheless, Trump in recent weeks had also modified his rhetoric, saying he wants "steel slats" along the border rather than the "concrete wall" he promised during his campaign.He said he hoped that wording would be more palatable to Democrats and that, whether it's called a "barrier," ''wall", ''steel slats" — and even "Peaches", at one point — "whatever you want to call it, it's all the same".The tweets come as Trump and Democrats remain at odds over border funding ahead of a February 15 deadline.