Florida Gov. Ron DeSantis (R) garnered outrage after he chartered a plane to carry 50 migrants to Martha’s Vineyard, Mass., in early September. The move, he argued, was meant to shed light on the crisis states along the southern border face amid an overwhelming number of migrant crossings. But some advocates and lawmakers of color argue these relocations are reminiscent of something more sinister — when white supremacist groups bused Black families to the North under false pretenses. In a recent letter to the Department of Homeland Security, Democratic lawmakers led by Rep. Ayanna Pressley of Massachusetts said the move...