Many machine politicians in several large cities came up through the ranks of firefighters, as did one of New York's greatest political operatives,

According to the text, one of the most critical challenges facing Mexican democracy is ______.

A. the rivaling drug cartels B. brain drain C. the economy D. clientelism

In order to secure ratification of a treaty, the president must gain the approval of

A. two-thirds of the House. B. two-thirds of both chambers of Congress. C. two-thirds of the Senate. D. a simple majority of members of both chambers. E. a simple majority of senators.