[Once-Ler]

To non citizens...the entire country should be considered fderal government property.

Would that include tourists and business visitors?

[Dat Mon]

"Would that include tourists and business visitors?"

Perhaps I could have stated this better. My point is one of access control. Think of this ID as a glorified passport.

The federal gov can regulate or restrict traffic entering or leaving its 'property', the same as you a private citizen can control access to your personal property (barring a court order of course). The feds can not make you show an ID to enter or leave your home, for example, but they can if you go onto a military installation.

All non citizens are here ultimately through an agreement with the federal government...not state local, or private business. Obviously non citizens can own property in the US, although not all countries (such as Mexico) are as open in their policy of foreign ownership.

In essence, if the feds can restrict access to the country, they have the right to also impose an ID requirement on non-citzens in the US.

Practically speaking, the ID would not necessarily be applied to anyone spending less than a certain time period here, such as the usual tourist or business person, unless they were tourists from 'special' classification countries.