US Dollars. In Utila (as with most of Honduras) U.S. Dollar banknotes can be used in place of the Lempira, with the local stores and businesses usually giving exchange rates at the same (or sometimes better) than the local Honduran banks, and without charging exchange commissions. Travelers Checks.
The exclusionary rule is one way the amendment is enforced. Established in Weeks v. United States (1914), this rule holds that evidence obtained through a Fourth Amendment violation is generally inadmissible at criminal trials.
What tSCotUS says is constitutional is legally binding, but that doesn't mean that it actually decides what is constitutional. It is unconstitutional for Congress to outlaw people speaking against the government. Even if tSCotUS were to declare that to constitutional, it still would be unconstitutional.