According to the Supreme Court case, US v. Schenck, when are our First Amendment rights limited?
When the press commits libel.
When your freedom of speech causes chaos.
When a petition has not been signed by enough people.
When your religion interferes with the public school system.

Currently, as of february 2016, an american traveling in france would be by the exchange rate. the weakness of the euro and the strength of the us dollar means that items in france cost less to an american than they otherwise would. of course, if this trend reverses and the us dollar weakens and the euro strengthens, such as was happening in early 2008, an american traveling in france would have an adverse experience because items would cost relatively more.