WASHINGTON — The Department of Defense announced on social media Monday it’s looking into “serious allegations of misconduct” against Arizona Democratic Sen. Mark Kelly, one of several lawmakers who posted a video last week telling military members they are not required to follow orders that violate the law.

The video spurred anger from President Donald Trump, who posted, also on social media , that he believed the video from six Democratic lawmakers represented “SEDITIOUS BEHAVIOR, punishable by DEATH!”

The claim led to safety concerns on Capitol Hill, especially after a year that included numerous acts of violence against lawmakers and key political figures.

The Defense Department announcement didn’t detail exactly how Kelly may have violated the Uniform Code of Military Justice bu

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