(Dive Travel Business News - April 11, 2012) -- Observers are questioning the potential effect of a recently passed U.S. Senate bill that has a provision to authorize the "denial, revocation or limitation of a passport" for individuals with a seriously delinquent tax debt. The new piece of governance has caused further confusion since it is buried on page 1147 of a bill designed to reauthorize federal aid for the nation's highways. read more »