During an exclusive interview with “This Week,” Facebook CEO and FWD.us founder Mark Zuckerberg criticized the current U.S. immigration system and framed comprehensive reform as a major civil rights issue.

“When you meet these children who are really talented, and they’ve grown up in America and they really don’t know any other country besides that, but they don’t have the opportunities that … we all enjoy, it’s really heartbreaking – right? That seems like it’s one of the biggest civil rights issues of our time,” Zuckerberg said.'

Zuckerberg – speaking to ABC News’ David Wright this week from Mountain View, Calif. – pushed back against those who argue the millions of undocumented immigrants estimated to be in the United States are here illegally and have no right to citizenship.

Read the whole story at ABC News