Earlier Saturday, lead House impeachment manager Rep. Jamie Raskin, D-Md., called to subpoena Herrera Beutler because she tweeted out a statement Friday reiterating comments she made about a talk she had with House Minority Leader Kevin McCarthy regarding Trump's involvement in the Capitol siege.
The Senate Saturday voted 55-45 to hear from witnesses, but then the Trump legal team and House impeachment managers came to the agreement to admit Herrera Beutler's statement into evidence and not request further witnesses.
In Herrera Beutler's statement, she reiterated her claims -- which she made earlier to Washington newspaper The Daily News -- that McCarthy spoke to Trump as rioters stormed the Capitol on Jan. 6, but Trump refused to stop them.
Herrera Beutler ended her statement by challenging those with firsthand knowledge of Trump's actions during the Capitol siege -- including former Vice President Mike Pence -- to come forward.
"To the patriots who were standing next to the former president as these conversations were happening, or even to the former vice president: if you have something to add here, now would be the time," she wrote.
ABC News' Emily Shapiro contributed to this report.