if you go to a post office and use the vending machine for stamps, the change comes in dollar coins.

Have a few

Had to look this up, “Production of the penny ceased in May 2012, and the Royal Canadian Mint ceased distribution of them as of February 4, 2013.” You truly are more advanced than your neighbors to the south ..Nickels, next?

The US also has a 2 dollar bill. A few years ago a child in Texasstan was accused of attempting to pass a counterfeit bill. And the police were called. And NONE of the "adults' had any idea it was real.

There's actually a coin shortage right now. Some major supermarkets are only taking debit or credit cards here in Ohio.

The Presidential $1 Coin Program was launched in 2007.

Has the US $ coin the same value as the Canadian one?

I have a couple hundred of them. They are very useful for poker games.

I wouldn't mind getting my hands on one or more of those. I have a $2 bill locked away in my safe

They never caught on over here. When I used to go to Canada, they solved it by just eliminating dollar bills. $2 bills are actually in circulation, the public just refuses to use them as with the $1 coin. The Loonie looks distinctive. $1 US coin is too close to a quarter in size and people don't like them.

For some reason the dollar coin never took hold in the US. Millions would have been saved. The average dollar bill last about 13 months. The coin about 30-40 years.
Of course we have become a more cashless society then when the first coins were issued.