South Texas Democratic Rep. Filemón Vela will endorse former Vice President Joe Biden Joe BidenBiden on Trump's refusal to commit to peaceful transfer of power: 'What country are we in?' Democratic groups using Bloomberg money to launch M in Spanish language ads in Florida Harris faces pivotal moment with Supreme Court battle MORE for president Tuesday.

Vela, who represents the border and is an outspoken opponent of President Trump Donald John TrumpBiden on Trump's refusal to commit to peaceful transfer of power: 'What country are we in?' Romney: 'Unthinkable and unacceptable' to not commit to peaceful transition of power Two Louisville police officers shot amid Breonna Taylor grand jury protests MORE's proposed border wall, told The Hill in an email of his imminent announcement.

"America needs Joe Biden. Joe Biden will restore our nation's spirit and make America feel good again," Vela wrote.

ADVERTISEMENT

"Joe Biden will use his enduring record of fighting for working and middle-class Americans and reinvigorate America’s soul," he added.

And Vela captured headlines in 2016 for telling then-candidate Trump to "take your border wall and shove it up your ass," and continued his criticism of the president.

"The Trump experience has created a degree of instability that is tearing right through the moral fabric of the United States of America," wrote Vela.

"Trump’s policies have given the ultra-wealthy tax breaks on the backs of middle class Americans, separated children from their parents, and wreaked havoc on our nations farmers. Our country’s future is at stake, and we cannot afford four more years of this kind of volatility," he added.

Biden is off to a strong start in a 23-Democrat field competing for the presidential nomination.

Since his announcement late last month, Biden has been collecting congressional endorsements with ease and pulling surprise leads in many polls.

"I’m proud to endorse Joe Biden for President of the United States because I know that Joe Biden will rekindle America’s goodness and ensure every citizen will have the opportunity to achieve the American dream," Vela wrote.