RICHMOND, Va. (AP) _ An FBI agent has testified that former Virginia Gov. Bob McDonnell and his wife, Maureen, once had more than $90,000 in credit card debt and that a family real estate partnership was operating at a loss. Prosecutors called agent David Hulser to the stand Wednesday to bolster their claim that the McDonnells were in dire financial straits when they did favors for the former CEO of dietary supplements maker Star Scientific Inc. in exchange for more than $165,000 in gifts and loans. Hulser testified that the McDonnells owed nearly $75,000 on credit cards when McDonnell was inaugurated in January 2010. The debt increased to more than $90,000 by September 2010 before falling to just over $31,000 in April 2011.