I already explained.
Consent.
DeSantis told them lies in order to get them to board the plane.
Biden did not.
"Under the law, once migrants have been released by border officials and served documents to appear in court, they are no longer in federal custody and are free to travel within the United States. It is not illegal for a state government to pay for that travel.
But if there is evidence the migrants were lied to by state officials about where they were going or what awaited them, as some attorneys have alleged, the migrants could pursue tort suits for fraud or severe emotional distress, according to Heidi Li Feldman, a professor at Georgetown University.
Iván Espinoza-Madrigal, the executive director for Lawyers for Civil Rights Boston who is representing some of the migrants sent to Martha’s Vineyard, said his clients were denied their constitutional right to due process, since the trip to Massachusetts likely means they will be unable to attend their immigration court appointments in San Antonio, Texas.
“If you are coerced and induced onto an airplane under false promises and told you’ll be flying to one place and directed somewhere else in midair, that is a deprivation of liberty the Constitution forbids,” Mr. Espinoza-Madrigal said."
The migrant drop-offs orchestrated by two Republican governors raised questions about how the law treats immigrants. Here’s what you need to know.
www.nytimes.com