President Donald Trump has issued a pardon to Stephen Buyer, a former Republican congressman from Indiana who served nearly two years in prison for making illegal stock trades based on inside information after he left office.

Lawyers for former a former Indiana congressman say he should be spared from prison after his insider trading conviction.

In one of the most significant attacks by law enforcement on insider trading in a decade, nine people have been charged in four separate and unrelated insider trading schemes They include a former U.S. congressman from Indiana, technology company executives, an investment banker, and a man training to be an FBI agent.