Nunavut and the Northwest Territories don't border the US. Yukon borders the state of Alaska.
Texas & New Mexico.
world war two
Cuba and the Philippines are both former US Territories gained in the Philippine American War. The other two were Guam and Puerto Rico are still US Territories.
Samoas, and Northern Mariana islands
California and New Mexico.
Oregón and texas
No there isn't any more US territories that still exists.
Britain & Mexico
Phillipines and Costa Rica Another Answer: Guam and Puerto Rico.
The Philippines, Guam and Puerto Rico.
Northwest Territories and Nunavut