I tried for a while to use two 16:9 vertically. Like you say, vertical makes a lot of sense and it works great. But web devs seem universally to assume that if it’s a tall narrow screen, to show the mobile version.

https://en.m.wikipedia.org/wiki/Border_search_exception

Federal law allows certain federal agents to conduct search and seizures within 100 miles (160 km) of the border into the interior of the United States.[5] The Supreme Court has clearly and repeatedly confirmed that the border search exception applies within 100 miles (160 km) of the border of the United States

There’s no first or fourth amendment rights within 100 miles of the border of the USA. Probably other missing rights too.