My roommates and I just watched that Kids by the Dozen show on TLC that apparently featured the Duggars once (didn't see that one) and showed a family of 13 the night we watched and I thought the same thing about them (the Jeubs).I can also say after watching the shows about this family, I wonder how the kids would do away from the family unit, they seem to be rather sheltered from the real world with school and church all happening at home.
Actually, he was just a state senator, not a US senator so I'm not sure that provides much pension. I think he works in real estate. I also think they got their new house furnished by being willing to be on the TLC show. Sort of a trade.Remember he was a Senator or Congressman and will get a hugh pension for the rest of his life.
Also you can bet the TV is paying big bucks to air the stories.