Years ago it was a joke when I gave the fallacy assignment in which students had to make fallacious arguments for various preposterous conclusions.  It's not really funny anymore, because there exist people like Chuck Grassley, Senator from Iowa.  Here is Senator (they're going to kill grandma) on childhood obesity (via Thinkprogress):

Concern was raised about the proposed Department of Labor's intent to greatly limit child labor on family farms.

"This farm bill will greatly affect our FFA and 4-H programs," said Grassley. "Kids won't be able to help on farms not owned by their parents.

"It's interesting that this child labor bill goes against Michelle Obama's anti-obesity initiative," said Grassley. "How can kids be active if they are limited by this law?"

Edgar Dorow, retired extension director, raised the question regarding whether humans have had a direct impact on global warming.

"I believe there are still many questions to be answered," said Sen. Grassley. "There are a few scientists who are proponents of manmade global warming as opposed to natural global warming.

"Until we get an international agreement to make changes, nothing is going to happen."

I suppose supporting food stamps also contradicts Michelle Obama's childhood health advocacy.  The children cannot get fat if they are not eating.

Update: Some context to the proposed child labor laws.  These are the rules Grassley thinks would make kids fat:

Under current law, 400,000 children working on farms are not protected from exploitation and dangerous labor. The proposed rules would forbid children younger than 16 from working with pesticides, timber operations, handling “power-driven equipment, or contributing to the “cultivation, harvesting and curing of tobacco.”

 I suppose according to some smoking does make you thinner.  So there's that.