Well intentioned laws today can be used by illintentioned actors in the future, and mild legal exceptions can become significant ones with a couple additions.

The 100 mile zone is a good example - that 100 mile zone assumes the entirety of the great lakes is international waters, even though Lake Michigan is 100% American Territory and over 300 miles long. So, you could be in a landlocked county of Indiana, and be harassed by the federal government for being in a border zone.

Whats to stop someone from saying, the entire Mississippi river and its tributaries are a border zone? With that you could get 80% of the US population into the border zone.

By enabling some "rule based" decisions that skirt the constitution, you enable a legal mechanism for constitutional rights to be violated without any legislation.