North America has vast reserves of uranium, enough to power the United States and Canada for hundreds of years, and the Trump administration's Department of the Interior is now, as we see, fast-tracking approval of new uranium mines:

The decision, executed by the Department of the Interior, was made in just 14 days…a stark contrast to the months or years such reviews typically require. //

According to a report by the OECD Nuclear Energy Agency and the International Atomic Energy Agency, as of 2015, the United States' reserves of recoverable uranium were at 101,900 tonnes (metric), and Canada is blowing us away with 969,200 tonnes. That's a lot of uranium. But, according to this same report, the world champion by a wide margin is Australia, with 2,049,400 tonnes.