A wealthy widow built a library and opera house on the border between Quebec and Vermont, a symbol of binational friendship.

You see the same pattern over much of the world. In three consecutive presidential elections in the United States. In the ...

Smoke from Canadian wildfires carried another day of poor air quality south of the border to the Midwest, where conditions in ...

Smoke from raging wildfires in Canada is worsening air quality in some U.S. states. But will Greater Cincinnati be affected?

Arizona's water crosses all sorts of boundaries, but leaders must be willing to cross borders to solve problems, experts say.

States across the border issued air advisories about particulate pollution that are expected to last for several days.

Air quality alerts and advisories have been issued in multiple states as Canadian wildfire smoke continues to spread.

A series of wildfires burning across central Canada sent smoke billowing into the U.S. over the weekend, with few signs that ...

“Fentanyl across the border is coming down,” said Rep. Claudia Tenney (R-NY), whose district neighbors Canada. “I’ve been speaking recently with [White House border czar] Tom Homan and the ...

Border crossings from Canada into the US plunged more than 22% in March compared to the year before, according to US Customs and Border Protection data. The sparsely-populated Washington state ...

President Trump has repeatedly described the U.S.-Canada border as an "artificially drawn line." But experts say just because it was man-made... When President Trump hosted Canadian Prime Minister ...

The U.S.-Canada border, as seen in this satellite map, mostly runs along the 49th parallel — and wasn't chosen at random. Planet Observer / Universal Images Group via Getty When President Trump ...