Uncertainty over whether Congress will fund transportation infrastructure not only endangers drivers and airline passengers, but creates a credit risk for companies involved, according to a new study by Standard & Poor's.

When 12,000 U.S. air traffic controllers went on strike 30 years ago, Ronald Reagan threatened that if they were not back on the job in 48 hours, they would be fired. Two days later, 11,000 of them, all members of PATCO, were terminated and permanently replaced. The PATCO strike not only changed the lives of those involved, who were unable to ever work again in their field, it proved to be a key turning point in this nation for workers seeking a voice at their workplaces, according to Georgetown University professor Joseph McCartin.