2020 election: Democrats running for president debate issues in Miami (29 images)

Mayor Pete Buttigieg, Former Vice President Joe Biden, Sen. Kamala Harris, D-Calif., and Sen. Bernie Sanders, I-Vt., are introduced prior to the NBC, MSNBC, Telemundo Democratic Primary Debate in Miami on Thursday. Photo by Kevin Dietsch/UPI

Appearing on stage for the second night of democratic debates from left to right, author Marianne Williamson, former Gov. John Hickenlooper, businessman Andrew Yang, Buttigieg, Biden, Sanders, Harris, Sen. Kirsten Gillibrand, D-N.Y., Sen. Michael Bennett, D-Colo., and Rep. Eric Swalwell, D-Calif. Photo by Kevin Dietsch/UPI

The second group of Democratic presidential hopefuls weighed in on a number of issues in their first debate Thursday night, taking aim at President Donald Trump and issues like immigration and healthcare. The debate was moderated by Lester Holt, Savannah Guthrie, Chuck Todd, Rachel Maddow and Jose Diaz-Balart. Photo by Gustavo Cabellero/UPI

When the subject turned to immigration, Harris noted that while Biden served in the Obama administration it deported undocumented immigrants that committed no other crimes and pledged that she would reinstate the Deferred Action for Childhood Arrivals program and extend deferral of deportation for DACA parents and veterans. Photo by Kevin Dietsch/UPI