Democrats are reluctant to impeach U.S. President Donald Trump, but he may provoke such a move by continuing to obstruct efforts by Congress to oversee his administration, a senior Democratic lawmaker said on Sunday.

Adam Schiff, chairman of the House of Representatives Intelligence Committee, told ABC's "This Week" that impeachment by the Democratic-run House would be politically divisive and unlikely to succeed in the Republican-run Senate.

"But he (Trump) may get us there," Schiff said. "He certainly seems to be trying and maybe this is his perverse way of dividing us more ... he thinks that's to his political advantage, but it's certainly not to the country's advantage."