I'm the Canadian who was detained by ICE for two weeks

If the objective is to scare people off from going to the USA, then they're doing a magnificent job. I've heard other cases of people with green cards being arrested and put in terrible conditions, with absolutely no reason given. This woman was ready to go back home and not enter the US, but instead she was dragged through hell and only released because she was Canadian. All those with different passports get subjected to their own more oppressive and never ending hells, like being deported to a prison camp in Ecuador with no idea when you'd ever be released.

New America is absolutely terrifying.

Sorry, but only modalities are a new thing, not the discretionary part with all disregard to proportion. Already decades ago people (and high profile people) were stopped at the custom and sent back without justification (reconstructed as "apparent dislike") with the first flight.