"The government enjoys broad legal authority to move people out of their homes to promote the public interest, so long as it provides property owners with what the U.S. Constitution calls “just compensation.”
This seemingly universal doctrine is unfair in a fundamental sense, however, since it makes it far easier for a government to buy out and relocate a poor neighborhood than a wealthy one."
https://grist.org/migration/climate-change-home-buyouts-displacement-managed-retreat/