—ABC News (@ABC) February 15, 2021
In an interview with ABC's George Stephanopoulos on Sunday, Cassidy said he thought Trump's power over the GOP was fading.
"I think his force wanes. The Republican Party is more than just one person," Cassidy said.
"The Republican Party is about ideas," he continued, adding: "Now the American people want those ideas, but they want a leader who is accountable and a leader who they can trust. I think our leadership will be different going forward but it will still be with those ideas."
Cassidy's defense came as a rift widened in the Republican Party between those who have condemned the former president and the millions of Republican voters and their congressional allies who have continued to back him.
Cassidy was reelected to the Senate in November, meaning he has nearly a full six-year term to serve before he is up for reelection.