Some people INSIST on learning the hard way.

If the insanely armed and stupid US locals don't shoot you, the government might lock you up for weeks for no reason.

I don't know why anyone would want to visit that shithole.

The headline leaves out an important detail -- her husband did not have a valid visa.

They were turned back to Montana on the American side – and to US border control officials. Bill’s US visa had expired; Karen’s had not.

Her visa was valid, but it can be risky in general crossing any border with somebody who has invalid documents. Make of this what you will, but it is important context missing from the headline.