Data: Axios research; Map: Simran Parwani/Axios
Republican governors have transported over 10,000 migrants from the southern border to Democratic strongholds this year, sparking a political firestorm over immigration policies less than two months before November's midterm election.
The big picture: The tactic, started by the governor of Texas in April, reached a fever pitch after migrants were flown to Martha's Vineyard and dropped off in front of the vice president's house last week.
