"Republicans, by the way, are guided by science," Sen. Bill Cassidy told the Native American congresswoman, despite his past vote rejecting climate science.
Multiple lawmakers publicly supported some kind of investigation into the deadly Capitol riot, a day after the Senate voted to acquit Trump in his impeachment trial.
Cassidy was one of seven GOP senators to join Democrats in voting to convict the former president of incitement.
"He is guilty," Bill Cassidy of Louisiana said.
Last year was the fourth-deadliest in the nation for right-wing extremist violence, according to data from the Anti-Defamation League's Center on Extremism.
The Minnesota congressman dismissed criticism about the timing of the bill, given the subsequent GOP Graham-Cassidy Obamacare repeal effort.
Republican leadership has failed to secure enough support for the Graham-Cassidy bill, ending their latest effort to repeal and replace the Affordable Care Act.
Republicans decided not to vote on the measure because they didn't have enough support to pass it.
"I still can’t believe we pulled it off, but we did. It’s amazing, isn’t it?"
But Senate Republicans are changing their bill so much, the CBO can't tell exactly how many millions.