it is a very detailed and compicated process in many cases. Because almost all mortgage get sold to the government secondary market FMNA, Freddi Mac, VA etc., the goverment inherits all those records and this guy has reams of records he can troll through at liberty, no subpeona required. He can just point to anything he wants and decide it is suspicious and refer it for prosecution. It doesn't mean there is anything to it. They keep bringing up having more than one 'primary residence', which to a lay person seems like a no brainer. Of course it should be illegal and must be fraud, but it's not depending on the circumstance. One big exception is if you get a new job or are transferred a distance from where your initial primary residence mortgage is located, you can buy a new home where your new job is with a primary residence priced mortgage and you are not forced to sell your prior residence if you don't want to. As long as you can financially qualify to pay both mortgages. Congress peple buying a new 'primary residence' when they move to DC would be an allowed move for employment reasons, and they in particular may not want to sell their other residence because who know how long they will be there. When they eventually leave office, many want to return to their prior home. Not to mention it is easy to make an honest error during the mortgage process, especially one that wouldn't have affected their eligibilty anyway. That can be referred as fraud because how do you prove it was a mistake and not intentional.
It's just sad they are alllowed to do this to people.