The idea of tying travel to taxes has been percolating in Washington for years. The IRS and Justice Department cooperate. For example, they can have tax cheats arrested when they land on U.S. soil. Adding to the mix is FATCA, the Foreign Account Tax Compliance Act, which penalizes foreign banks that don’t hand over American account holders. But, now, the feds want to go after people even if they are reporting everything correctly, but have unpaid tax debts.