Sen. Cory Gardner, R-Colorado, would not commit to approving the billions Trump is seeking.
'Look, I haven't seen cost estimates, I don't know what exactly he's talking about,' Gardner told CNN on Thursday. He said making good on border security was 'an issue of trust with the American people.'
For the GOP conference, Trump was visiting a city that he has singled out and criticized for supposed voter fraud. And the mayor has pledged to protect immigrants who are in the country illegally, in face of Trump's crackdown on 'sanctuary cities.'
Still, said GOP Sen. Bill Cassidy of Louisiana, 'People are more optimistic, the stock market's rising, companies are deciding to build, folks look at him approving the Keystone XL pipeline. He said he wanted to create jobs. I think there's a sense that he's working hard to create jobs and I think that's incredibly positive.'
As for Trump's fixation on supposed illegal voting by 3 million to 5 million people, which is untrue, and the attendance at his inauguration: 'Those are distractions, and it's dwelled upon. I particularly don't care about it,' Cassidy said.
Most Republicans are taking Cassidy's approach of playing down the distractions. But others said there was real concern that Trump could be the GOP's own worst enemy at the very moment they've seized full control of Washington and believe they have a mandate to usher in sweeping change, starting with repealing and replacing Obama's health care law.
Lawmakers also were to hear from Vice President Mike Pence and British Prime Minister Theresa May. Lawmakers said it was a chance to showcase the relationship with Britain in the visit from May, who vaulted to power as a result of the surprise vote to leave the European Union; many saw that as a precursor to Trump's own victory.
Her speech was coming on the same day when Trump was expected to sign executive orders starting work on bilateral trade deals to take the place of the sweeping multilateral Asia-Pacific pact negotiated under the Obama administration, which Trump announced the U.S. is discarding.