David McCormick, the Republican nominee for U.S. Senate in Pennsylvania, speaks at a campaign event at the Beerded Goat Brewing Co., April 25, 2024, in Harrisburg, Pa. (AP Photo/Marc Levy)

Pennsylvania GOP Senate candidate David McCormick released an ad featuring one of the candidate’s West Point colleagues, who made a Facebook post in 2021 calling then-President Donald Trump a “horrible treasonous criminal.”

The ad primarily consists of an interview with McCormick’s friend Cliff Harris, who heavily praised McCormick’s leadership qualities.

But on Jan. 6, 2021, Harris made a Facebook post condemning the violence in Washington D.C. during the Capitol riot and calling for peace.

In the comments section of Harris’s post, one user responded that, “This is exactly what Trump asked for,” and that Rudy “Guiliani called for a trial by combat.” To which Harris replied, “horrible treasonous criminals.” McCormick is endorsed by Trump for the current Senate race.

McCormick has had a tumultuous relationship with Trump in recent years. In the 2022 Pennsylvania Senate race, Trump endorsed McCormick’s primary opponent Dr. Mehmet Oz, who went on to lose in the general election to now-Sen. John Fetterman (D). Trump reportedly refused to endorse McCormick unless he publicly commented that the 2020 presidential election was stolen. With emerging McCormick as the clear Republican frontrunner in 2024, Trump eventually gave in and endorsed McCormick last month.

McCormick will face incumbent Sen. Bob Casey (D) in the November general election, who led McCormick by four percentage points (48%-44%) in a recent poll from AARP.