Story highlights Lindsey Graham spoke Thursday at the Washington Press Club Foundation's 72nd Congressional Dinner

"If you killed Ted Cruz on the floor of the Senate, and the trial was in the Senate, nobody would convict you," Graham said

The South Carolina Republican also said his party has gone "bats--- crazy"

(CNN) South Carolina Republican Sen. Lindsey Graham thinks his party has gone "bats---" crazy, and joked Thursday that it's possible to get away with murdering Ted Cruz if it happened in the Senate.

"If you killed Ted Cruz on the floor of the Senate, and the trial was in the Senate, nobody would convict you," the former presidential candidate said at the Washington Press Club Foundation's 72nd Congressional Dinner, referencing the Texas senator's unpopular reputation on Capitol Hill.

CNN has reached out to Cruz's presidential campaign for comment.

While Graham teased Democrats and other politicians in the room -- at one point turning to House Minority Leader Nancy Pelosi and asking her not leave to leave for the sake of his own party -- he focused his roast on the 2016 election and the GOP field, in which he formerly participated.

"The most dishonest person in America is a woman who is about to be president, that can get me. My party's gone bats--- crazy," the Palmetto State Republican told the crowd.

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