The U.S. just instantly shut down multiple entries from the Canadian border. Very easy to do. No great effort was required. I wonder why they never do that with the Mexican border.

The U.S. just instantly shut down multiple entries from the Canadian border.

Very easy to do.

No great effort was required.

Source: https://nbcnews.com/news/us-news/rainbow-bridge-niagara-falls-closed-explosion-vehicle-reportedly-enter-rcna126397

I wonder why they never do that with the Mexican border.