In this Thursday, April 29, 2021, photo, a U.S. Border Patrol agent directs a driver after the passenger received a COVID-19 vaccine from nurses of the Blackfeet tribe at the Piegan-Carway border crossing near Babb, Mont. The Blackfeet tribe in northern Montana gave out surplus vaccines in April to its First Nations relatives and others from across the border. (AP Photo/Iris Samuels)
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