Billionaire Warren Buffett and many wealthy Americans pay a lower tax rate than middle-class families do. That’s just not fair. Warren Buffett knows it and President Obama wants to fix it. The Buffett Rule would require everyone to pay their fair share—a key step to reduce the deficit and invest in what we need to grow and strengthen the economy. Mitt Romney opposes the Buffett Rule because he wants to protect tax loopholes and give millionaires like himself trillions of dollars in tax breaks paid for by either increasing the deficit or by cutting programs critical to the middle class and economic growth.