According to CBP data, at least 404,000 migrants have flown into the U.S. via the CHNV parole program since it first began:
154,000 Haitians
95,000 Venezuelans
84,000 Cubans
69,000 Nicaraguans
So far, legal challenges to this controversial parole program have failed in court. A Texas lawsuit was dismissed earlier this year after a judge ruled the state didn't have standing to sue. More lawsuits are pending.
The Biden admin says the program is a lawful use of executive parole authority. They consider the program a success, and believe it provides an incentive to not cross the US border illegally. The numbers of Haitians and Cubans crossing illegally have steeply fallen as a result of the program.
Critics say the program essentially waves a magic wand to mass import hundreds of thousands of otherwise inadmissible migrants into the US, with the likelihood of them ever leaving or being deported if they stay past the permitted parole grant being remarkably low.