Region
United States
162
Mexican-American Border Region
57
Mexico
25
Canada
9
Arizona
6
North America
6
California
5
Northern boundary of the United States
4
Texas
4
Southwestern States
3
Canadian-American Border Region
2
El Paso (Tex.)
2
San Diego
2
Austria
1
Bisbee
1
El Paso
1
Germany (West)
1
Italy
1
New Mexico
1
New York (State)
1
Organ Pipe Cactus National Monument
1
Southern boundary of the United States
1
Southwest, New
1
Tohono O'odham Nation of Arizona
1
Tohono O'odham Reservation
1
Tucson Region
1
Vermont
1