A new investigation ties Michigan Senate candidate Mike Rogers' sudden jump in family wealth to the military contracting firm his wife ran while he chaired the House Intelligence Committee — damaging for his campaign, useful for his opponent.

• Rogers was nearly broke after a 2007 divorce; the family's wealth climbed sharply as his second wife, Christy Rogers, rose to run the US arm of British security contractor Aegis.
• Aegis won a billion-dollar contract to guard the US embassy in Kabul seven months after Rogers took over the intelligence committee in 2011.
• Aegis also had operations in Libya and had assessed Benghazi before the 2012 attack — and conservatives at the time accused Rogers of slow-walking the Benghazi probe to shield his wife's firm.
• Rogers quit Congress in 2014 weeks after that criticism peaked, then moved into cyber security work as the couple's net worth rose again.
• His campaign calls the charge false and is attacking opponent Abdul El-Sayed over his family's Egyptian Muslim Brotherhood ties, a convoluted line of attack that lands weakly when gas costs $4 a gallon.

Outlook: Expect the corruption story to surface in the Michigan Senate debate, with both camps trading family-connection attacks into the final stretch.