If you owe Taxes you can not travel.
Sen. Harry Reid (D-Nev.) proposed that
if you owe the IRS more then $50,000, you shouldn’t get a passport. Senate Bill 1813,
introduced by Senator Barbara Boxer (D-CA). It was introduced in
November and passed by the Senate on March 14 “to reauthorize
Federal-aid highway and highway safety construction programs, and for
interesting report here: Forbes
you are on a list.