From American Progress: Think Fast... The Senate passed a bill yesterday "prohibiting federal contractors from avoiding Social Security and Medicare taxes by hiring workers through offshore shell companies." Earlier this week, the House "also voted unanimously to ban the practice, used by former Halliburton subsidiary KBR" and others to avoid payroll taxes for thousands of American workers in Iraq. In order to justify the Bush administration's warrantless wiretapping program in 2001, then-Jus