"As we begin our celebrations for the birth of Jesus Christ, the prince of peace, here's something to think about," Gabbard said in a video posted to Twitter on Tuesday. "Congress and Trump just passed a $738 billion war budget instead of providing for the health, the safety, the security, the wellbeing of our people and our planet."

"Stand with me, let's end this insanity," she added. 

President Trump last week signed the $738 billion National Defense Authorization Act. The 2020 spending bill created the Space Force military branch and gave federal workers 12 weeks of paid parental leave.

Gabbard's presidential campaign has struggled to gain traction in a crowded field of Democratic White House candidates. The lawmaker faced criticism from within her party recently after voting "present" on Trump's impeachment, with the former governor of Hawaii going so far as to call for her resignation.