Democratic pollster Pia Nargundkar said in an interview that aired Tuesday on Hill.TV that President Trump Donald John TrumpBiden on Trump's refusal to commit to peaceful transfer of power: 'What country are we in?' Romney: 'Unthinkable and unacceptable' to not commit to peaceful transition of power Two Louisville police officers shot amid Breonna Taylor grand jury protests MORE's approval rating has not yet seen any notable bumps, despite any legislative victories the president may have or any negative attention he has received.

"Gallup did an analysis at the end of last year and found that President Trump actually has the most steady approval rating of any president in history," Nargundkar, a senior associate at ALG Research, told host Jamal Simmons on "What America's Thinking."

"Some people take the pessimistic view of that and say nothing he does affects him," she continued. "Some people take the optimistic view and say look, he never had a honeymoon period. He hasn't had any large bumps due to his trade policy or his tax cut or anything like that. So no matter what it's just going to sort of stay in that zone."

"I feel like that's been borne out so far," she said.

Trump fulfilled a major campaign promise at the end of 2017 when he passed his tax-cut plan into law. He is currently locked in trade negotiations with China after vowing to get the upper hand in Washington's trade relationship with China.

A new Hill-HarrisX survey, released on Tuesday, found that Trump's approval rating is steady at 44 percent.

The RealClearPolitics average of Trump's approval rating was at 44.9 percent on Tuesday.

— Julia Manchester