In a sweeping use of its authority, the Department of Homeland Security said Tuesday that it would bypass environmental reviews to speed construction of fencing along the Mexican border.
Michael Chertoff, the homeland security secretary, issued two waivers covering 470 miles of the border from California to Texas well as a separate 22-mile stretch in Hidalgo County, Tex., where the department plans to build fencing up to 18 feet high into a flood-control levee in a wildlife refuge.
“Criminal activity at the border does not stop for endless debate or protracted litigation,” Mr. Chertoff said in a statement.
The announcement angered environmental groups, which have raised concerns through lawsuits and public hearings about the damage that fencing could cause to wildlife. Property owners, particularly along the Rio Grande, have also objected to what they considered federal intrusion on their land and access to the river.


