Democratic Sen. Claire McCaskill Claire Conner McCaskillMomentum growing among Republicans for Supreme Court vote before Election Day Democratic-linked group runs ads in Kansas GOP Senate primary Trump mocked for low attendance at rally MORE (Mo.) has called for one of her state's Democratic legislators to step down after she posted on Facebook her desire to see President Trump assassinated.

The Missouri Democrat told CBS News that she thought Democratic state Sen. Maria Chappelle-Nadal's Facebook post, in which she said, "I hope Trump is assassinated," was "outrageous."

"I condemn it. It's outrageous," McCaskill said. "And she should resign."

Chappelle-Nadal's post was deleted but was captured in a screen shot and tweeted by St. Louis conservative radio host Mark Reardon.

A Missouri State Senator from St. Louis has now called for the assassination of @realDonaldTrump. Keep it classy @MariaChappelleN. pic.twitter.com/JTrkxk4Pkz — Mark Reardon (@MarkReardonKMOX) August 17, 2017

Chappelle-Nadal told CBS that she has no intention to resign, despite what she said on Facebook.

"I refuse to resign for exercising my First Amendment rights, even though what I said was wrong," she said.

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In additional statements to The Associated Press, she said she would "continue to talk" about the situation that led to the anger she displayed.

"What I wrote down on my private Facebook page, was it wrong? Absolutely," she told the AP. "But I am going to continue to talk about the anger and the frustration that led to that."

In a statement, the Secret Service said that they investigate all threats to the president "whether they be direct, implied, or comments in passing."