virgin island
Jarvis Island, Kingman Reef, Palmyra Atoll, Johnson Atoll, Midway, Wake Island, Guam, Baker Island, American Samoa and several others. Hawaii is part of the US and is not "owned" by the US. See the Wikipedia link below for the list of U.S. territories (not just those in the Pacific).
None - Apart from occasional visits by the US fish and wildlife service, it's an uninhabited island which is designated as a nature refuge.
Wake Island is a US territory, I think.
The U.S. has never owned Canada.
Puerto Rico US Virgin Islands Navassa Island Palmyra Atoll Jarvis Island Kingman Reef American Samoa Johnston Atoll Baker Island Howland Island Midway Islands Wake Island Northern Mariana Islands Guam
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Baker Island of the United States Minor Outlying Islands - According to Wikipedia, the equator runs through part of the territorial sea of 12 nautical miles around the perimeter of Baker Island; Baker Island is located at +0° 11' 42.00", -176° 28' 42.00" (also read as 0°11.7′N 176°28.7′W). Near Baker Island is Howland Island, also a US Minor Outlying Island.
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Samoans
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MEXICO owend it