Last month, Marianna Wright, the executive director of the privately owned National Butterfly Center here, discovered survey stakes on the property marking out a 150-foot-wide swath of land.

Ms. Wright later encountered a work crew cutting down trees and brush along a road through the center. The workers said they had been hired by United States Customs and Border Protection to clear the land.

“You mean my land?” Ms. Wright asked, before kicking them out… Read more from the New York Times