And so it begins. House Republicans have vowed to cut $100 billion from the federal budget. Of course, they're making exceptions for Social Security, Medicare, defense, and homeland security. Which means that the tiny slice that remains has to be subject to a 20% cut or more.They haven't even taken over yet, and they've already reduced their target by half! They will reduce it further still as they get into the details.?The one thing that won't be scaled down is the Republican appetite for tax c...