Didn't realize until noticed the road signs were in French.
I would think it might be hard to impossible to do that now.
Re-entering the USA has become such a pain in the rear, I have no interest in going to Canada any more.
The last time we went up was to Lac Megantic. At the Canadian border we were asked where we were going, for how long and business or pleasure.
30 seconds, and on our way.
Returning to the USA, we were the only ones at the crossing at the time.
It took over a half an hour.
I know someone who was detained for hours just because the border patrol (RCMP) felt like it. I am talking about a couple in their 60s who were visiting their daughter who went to school in Canada.