U.S. Postal Service does not have to deliver junk mail below cost

On which subject did Mitt Romney's position changeas he engaged in a policy shift in moving from the primaries to the general election?

A) international terrorism B) same-sex marriage C) immigration D) the right to bear arms

Which best defines a quota?

a. Taxes assessed on goods coming into a country b. The selling of a product as a price below the cost in the home market c. A restriction on the quantity of goods that can be imported to or exported from a country d. All of these are true.