A video by six Democratic lawmakers has set off an acrimonious partisan debate over what constitutes treason.

It is extraordinary for the Pentagon to directly threaten a sitting member of Congress.

The Defense Department suggested that the investigation of the Arizona Democrat Kelly stems from urging military members to refuse to follow unlawful orders.

Investigation of Mark Kelly comes after Trump accused the Democrats in the video of ‘seditious behavior, punishable by death’

Kelly was one of six lawmakers who appeared in a video urging military members to refuse illegal orders, accusing Trump of pitting the military against American citizens.

The U.S. Department of Defense announced on X that it will investigate Sen. Mark Kelly, D-Ariz., for "serious allegations of misconduct."

In a video, six Democratic lawmakers who held military and intelligence positions say 'illegal orders' can be refused.

The Arizona Democrat Sen. Mark Kelly, a U.S. Navy veteran, faces a Pentagon probe for saying in a video, "Our laws are clear: you can refuse illegal orders."

The Democratic Arizona senator issued a defiant response to attacks from the president and Defense Secretary Pete Hegseth.

A video by six Democratic lawmakers has set off an acrimonious partisan debate over what constitutes treason.

“I’m not backing down,” Sen. Mark Kelly (D-Ariz.) said after the Pentagon opened an investigation into his comments directed at the military.