We believe that Congress has the sole authority to raise our borrowing -- debt ceilings and increase our borrowing authority, and that Congress needs to act accordingly.

WHITEHOUSE: Press Briefing

We had a judgment to make, but whether the president's actions are, in fact, grounds for an impeachment, or some other sanction, is a decision in the sole discretion of the Congress.

CNN: Transcript: Judiciary Committee impeachment hearing

Under the so-called "dormant Commerce Clause" doctrine (dormant because it isn't actually written anywhere) the Supreme Court has interpreted the Commerce Clause in the Constitution, which gives Congress the sole right to regulate interstate commerce, as a mandate to strike down state laws that interfere with same.

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Until 1917, Congress had the sole authority to borrow money on behalf of the United States, and issued each debt separately.

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Yes, January has been mostly a tough month as the year-old victory against the massive content lobby gives way to the reality that we face a huge well-funded army of lobbyists whose sole purpose is to convince Congress that the interests of the massive content companies are more important than the interests of artists, musicians, innovators and ordinary people.

FORBES: It's Time for a Fresh Look at Copyright Laws

The danger, of course, is that as the sole superpower, America, spurred by its often parochial Congress, would impose its agenda on the multilateral lenders, backed by a threat of withdrawing funding support, as it did when it couldn't get its way in UNESCO.

CNN: ASIANOW - Asiaweek | Intelligence | The Week Ahead

Only Congress, which under the U.S. Constitution has sole authority to regulate interstate commerce, can do that.

WSJ: Best of the Web Today: Nobody's Laughing Now

The study, which was included in Olsen's annual report to Congress in January, used data from 2009 tax returns to plot the DIF scores for sole proprietorships across the country.

WSJ: AP Exclusive: Likely tax cheats flock South, West