Now he's reiterating his point with help from those whose lives are in legal limbo.
Facebook founder and CEO Mark Zuckerberg on Tuesday slammed the Trump administration's decision to phase out the Deferred Action for Childhood Arrivals (DACA) immigration policy, calling it a "sad day for our country".
Zuckerberg argued than any legislation should give those in the DACA program "a full pathway to citizenship" and "a guarantee of work status".
Created by an executive order of President Obama in 2012, the DACA program has shielded USA immigrants who were brought to the country illegally by their parents. "It is particularly cruel to offer young people the American Dream, encourage them to come out of the shadows and trust our government, and then punish them for it", he said in a statement on Facebook.
The three people he spoke with on the livestream were Leezia Dhalla, Tomas Evangelista and Maria Praeli, each a DACA recipient. Two of them work for FWD.us, an immigration advocacy group founded by Zuckerberg while Evangelista is a co-founder of the community group California Dreamers.
"I feel American, I am American, I only lack proper identification", said the woman. With DACA, Dahalla said she's been able to live out her dream, graduate from college, get a job, buy a auto and a home. She added that living here as an undocumented immigrant means that, "even though you feel American, you have to plan for the possibility of being deported".
"All we're asking for is a chance.I urge members of Congress to meet a Dreamer", the man said.
Praeli, whose family emigrated from Peru almost two decades ago, recalled how as a teen she lied to friends about why she couldn't get her driver's license and why she couldn't receive federal financial aid when applying to college.
Maria Praeli spoke about her arriving from Peru with her family at the age of five to seek medical attention for her 2-year-old sister who was hit by a vehicle and had to have her leg amputated.
"She had to watch her mother's funeral through an iPad because of how broken the country's immigration system is", Praeli said.
"I'll never forget the screams my mother had", she said.
Praeli worries that she may have to return to a country she doesn't know.
She also urged people watching the broadcast to contact their Congressional representatives and push for quick and permanent reform. "But there needs to be a process for us".