Democratic lawmakers were joined by children on Wednesday morning while delivering remarks calling for an end to the Trump administration’s “zero-tolerance” immigration policy.

“I think more powerful than anything I could say is to stand with children,” Rep. Luis Gutiérrez (D-Ill.) said as more than 20 children joined him and other Democratic House members on the floor.

“I know this is a tragic moment but this weekend I couldn’t have felt prouder to be an American,” Gutiérrez went on to say while standing among children and his colleagues. “I couldn’t have felt prouder about just what our exceptionalism is.”

“I saw Americans everywhere across this country standing up for children, standing up for those that are in need, standing up for moms and dads being separated,” Gutiérrez continued. “Let’s celebrate too that America sees this injustice, sees this cruelty, sees this evil and did not remain silent and that is the America that I was so happy I was born into.”

.@RepGutierrez is joined by children on floor of the House while speaking on child detentions at the border. https://t.co/fqXaNnGUpv pic.twitter.com/KtSIDZF2A3 — CSPAN (@cspan) June 20, 2018

The demonstration comes one day after Sen. Bob Menendez (D-N.J.) played audio obtained from inside a facility used to detain migrant children separated from their families during a speech on the Senate floor.

"They say a picture is worth a thousand words. But the audio released yesterday ... is worth a million tears. How do you submit the cries of innocent children to the congressional record? I don't know how you do that, but you can hear it," Menendez said before playing the audio obtained by ProPublica.

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The White House has been facing a growing amount of pressure to end the controversial immigration policy Attorney General Jeff Sessions Jefferson (Jeff) Beauregard SessionsGOP set to release controversial Biden report Trump's policies on refugees are as simple as ABCs Ocasio-Cortez, Velázquez call for convention to decide Puerto Rico status MORE introduced last month that is leading to immigrant children being separated from their parents along the border.

Thirteen GOP senators sent a letter to Sessions asking that he pause the practice while Congress works on legislation.

Democratic lawmakers have rallied together to back legislation from Sen. Dianne Feinstein (D-Calif.) aimed at preventing families from being separated.