The agreement, which follows a court ruling earlier that supressed some evidence in the case, reduced the charges and potential financial penalties.

Vision Systems was indicted in 2009 after U.S. immigration authorities said they had arrested 11 people in six states as part of investigation into visa and mail fraud. The company was charged with with conspiracy and eight counts of mail fraud. The government sought a forfeiture of $7.4 million.

The plea agreement was filed recently in U.S. District Court in Iowa and signed by Viswa Mohan Mandalapu, president of Vision Systems.

The agreement lets a federal Judge fine the company up to $500,000. Vision Systems also agreed to pay restitution of at least $236,250.

Jail time may be involved, but that was also left up to the judge's discretion.