WASHINGTON (AP) — Frustrated with his own party's leaders in Congress, President Donald Trump talked up his suddenly cozier relationship with Democrats on Thursday, raising the prospect of new deals on government spending and even posting one of his tweets at their behest.

"I think that's a great thing for our country," Trump said, describing his new and "different relationship" with Democrats.

In public, Republican leaders glossed over the striking turn of events, but lawmakers in both parties were privately puzzling over how Trump's approach might affect the fate of the party's agenda. And s...