On Thursday, the Supreme Court rejected President Donald Trump's attempt to cancel the Obama era policy Deferred Action for Childhood Arrivals (DACA). DACA offers legal protection for hundreds of thousands of undocumented immigrants who came to the United States as children.

For now, they retain their protection from deportation, but homeland security expert Juliette Kayyem spoke with Boston Public Radio on Friday about what happens if the Trump administration tries to rescind the policy again.

"Trump this morning said they're going to go back and look at this, but I think that's bogus," she said. "Trump in some ways is probably grateful for this decision, because otherwise he would've had to have owned the deportation of 'dreamers.'"

Eighty percent of Americans view "dreamers" as an exception to normal immigration rules, Kayyem noted. "I think this is a great moment not just for 'dreamers,' but for all Americans."

Kayyem is an analyst for CNN, former assistant secretary at the Department of Homeland Security and faculty chair of the homeland security program at Harvard University’s Kennedy School of Government.