A key part of the White House's strategy for the U.S.-Mexico border goes on trial

Valerie Laveus greets her nephew Tristan-Ryan Malherbe Daniel, as he and his dad, Reginald Malherbe Daniel, rear, arrive in the U.S. for the first time at Fort Lauderdale-Hollywood International Airport, in Fort Lauderdale, Fla. (Jim Rassol/AP)

When the White House announced a new way for migrants from Haiti to come to the U.S. legally back in January, Valerie Laveus wasted no time.

"I was like, God, you answer prayers. I am so grateful. And I jumped on it," said Laveus, a schoolteacher in Florida who's helping her brother and nephew come to the U.S.