Which amendment to the U.S. Constitution protects persons and papers from unreasonable search and seizure?

How many constitutional amendments have been proposed since its ratification?

a. 10 b. 17 c. 27 d. 31

Barack Obama's tack toward the ideological center during the 2008 general election can be explained by the institutional __________

A)requirements of the Democratic Party B)demands of the US electoral system C)pressures of the news media D)structure of the executive branch