Not on this program. In the U.S. there have been several attempts by various agencies to prohibit certain types of background checks, but not on this program, that we're aware of. In fact, the industry--American Trucking Association, the regional motor carriers association--got on board that the criminal background check, being fingerprint-based, was probably the best-case scenario to allow the government to conduct proper security assessments.
On March 5th, 2009. See this statement in context.