Can I buy gold coins directly from the U.S. government? Canadian?

Can I buy gold coins directly from the U.S. government? Canadian?

Terry Says:  The U.S. Mint  sells collectors coins online.  Here’s a link:  http://catalog.usmint.gov/coins/gold-coins/  So if you want “proof sets” or individual collectors coins, you can order instantly online.  The Mint does not sell bullion coins  (those without potential collector value) directly,  but they have a search engine allowing you to find reputable bullion coin dealers.  Here’s a link:  http://catalog.usmint.gov/bullion-dealer-locator

Similarly the Royal Canadian Mint sells collector gold coins, and other coins, directly to the public:  Here’s a link to the Royal Canadian Mint online store.