Half of Americans pay no income tax?
Mitt Romney's assertion that almost half of Americans pay no federal income tax is backed by a 2011 study, but the way he cited the figure, as some other mostly Republican politicians have in recent months, can be misleading.
A quarter of US millionaires pay lower taxes than some middle-class households, congressional researchers said, in a report that is bound to fuel the political battle over the taxation of the wealthiest Americans.