Rep. Seth Moulton, a Marine veteran and 2020 Democratic presidential candidate, revealed he sought treatment for his post-traumatic stress disorder after serving in Iraq.

The announcement came as the presidential hopeful unveiled a new plan to expand mental health care for veterans as part of his 2020 campaign.

"When I came back from Iraq I sought help for managing post-traumatic stress. I'm glad I did," he wrote in a tweet. "Today, I'm sharing my experience because I want people to know they're not alone and they should feel empowered to get the treatment they need."

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The plan, which was laid out just one day after Memorial Day, includes:

► Requiring annual mental health checkups and a mandatory counseling session for everyone returning from a combat deployment within two weeks of arriving home

► Double the number of Department of Defense mental health professionals and increase the mental health budget by $500 million

► Establish 511 as a National Mental Health Crisis Hotline

► Fund yearly mental health screenings for every high schooler in America

Moulton is one of the first presidential candidates to publicly reveal that he has received mental health treatment.

However, this is not the first time a politician has revealed they suffer from PTSD.

Jason Kander, former Missouri secretary of state, made national headlines last year after he dropped out of the Kansas City mayoral race due to PTSD and depression after serving in the Army National Guard, where he served in Afghanistan. Kander became a rising star in the Democratic Party after narrowly losing the 2016 Senator race to GOP incumbent Roy Blunt.

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In the Moulton campaign's press release for his plan, it noted that "as Americans, we owe it to those who defend our country—and to their families—to make sure they receive the best healthcare in the world."

"We must recognize mental health matters to everyone," Moulton tweeted. "Tens of millions of Americans deal with mental health conditions each year, including some of the most talented and accomplished people in the world.

"We owe it to our country to provide the best mental health care," he continued.

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