After U.S. Rep. Maggie Goodlander, D-NH, and five other Democrats appeared in a video telling active duty service members to refuse illegal orders, President Trump said on social media they had engaged in “SEDITIOUS BEHAVIOR, punishable by DEATH” and that they should be arrested.

According to The Guardian, the video, released on Tuesday, features the six Democratic lawmakers who have previously served in the military or in intelligence roles, including Senators Elissa Slotkin and Mark Kelly, and Representatives Maggie Goodlander, Chris Deluzio, Chrissy Houlahan and Jason Crow.

“Like us, you all swore an oath to protect and defend this constitution,” the lawmakers said in the 90-second video. “And right now, the threats to our constitution aren’t just coming from abroad, but from right here at home. Our laws are clear, you can refuse illegal orders, you can refuse illegal orders, you must refuse illegal orders. No one has to carry out orders that violate the law or our constitution,” The Guardian quoted from the video.

On Thursday morning, Trump wrote on Truth Social: “It’s called SEDITIOUS BEHAVIOR AT THE HIGHEST LEVEL. Each one of these traitors to our Country should be ARRESTED AND PUT ON TRIAL,” The Guardian reported.

In a news release Thursday, Goodlander and the five others in the video, said they are all veterans and national security professionals who love their country and “swore an oath to protect and defend the Constitution of the United States. That oath lasts a lifetime, and we intend to keep it. No threat, intimidation, or call for violence will deter us from that sacred obligation.”

“What’s most telling is that the President considers it punishable by death for us to restate the law. Our servicemembers should know that we have their backs as they fulfill their oath to the Constitution and obligation to follow only lawful orders. It is not only the right thing to do, but also our duty.

“But this isn’t about any one of us. This isn’t about politics. This is about who we are as Americans. Every American must unite and condemn the President’s calls for our murder and political violence. This is a time for moral clarity.

“In these moments, fear is contagious, but so is courage. We will continue to lead and will not be intimidated,” the statement said.