The Tucson Sector of the Border Patrol covers 262 miles of the border and encompasses Pima, Santa Cruz and Cochise counties, including Tucson and the border city of Nogales.
The complaint filed in U.S. District Court comes three weeks before the Republican governor steps aside for Democratic Gov.-elect Katie Hobbs, who has said she opposes the construction.
While Mexicans still account for the largest group of migrants, according to U.S. Customs and Border Protection data, their share of the total has been slipping compared to Cubans and refugees from Central and South America.
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