The Senate this week may vote on whether President Barack Obama had the authority to use military force in Libya without approval from Congress.

Sen. Rand Paul (R-Ky.) accuses Obama of hypocrisy for doing as president what he criticized as a presidential candidate.

Paul has introduced a "sense of the Senate" resolution, which quotes President Obama's own words as a candidate in 2007, when Obama told The Boston Globe: "The President does not have power under the Constitution to unilaterally authorize a military attack in a situation that does not involve stopping an actual or imminent threat to the nation."

Paul's measure is intended to put the Senate on record in affirming that Congress is the body with Constitutional authority on matters of war.

"The president's own words are incredibly important here," Paul said. "The hypocrisy is amazing."