Grassley on Fast and Furious: what is president covering up? - KTIV News 4 Sioux City IA: News, Weather and Sports

Attorney General Eric Holder is charging that he's become a "proxy" for Republican attacks against President Barack Obama in an election year. Holder tells The Washington Post that Republican congressional figures have used the failed gun-tracking operation known as "Fast and Furious" to attack a wide range of administration policies. The GOP-run House voted last week to cite Holder for contempt of Congress for refusing to turn over materials tied to the operation.

In the Senate, Iowa Republican Senator Chuck Grassley is conducting an investigation into the matter. He says prior to now, he never thought President Barack Obama was involved, but now he says he wonders what he's covering up.

"So I don't know what the cover up is all about, but all we're doing is exercising our constitutional responsibility of making sure that the president faithfully executes the laws as he takes an oath to do and when the Justice Department encourages our gun dealers to illegally sell guns, you obviously know that the law isn't being faithfully executed," said Grassley.

Senator Grassley made his comments Tuesday morning on News Four Today.