Efforts by U.S. immigration officials to deport Kilmar Abrego Garcia to Uganda, a country to which the Salvadoran national has no ties, has again focused attention third-country deportations.

Experts say sending a migrant to a third-party country that they have no connection to is a costly, complex and legally questionable move.

Kilmar Abrego Garcia, a Maryland father who was previously wrongfully deported to El Salvador, was arrested Monday at his scheduled check-in with U.S. Immigration and Customs Enforcement after the Trump administration announced its intent to deport him to Uganda,