Forbids congress to give itself a pay raise, but allows it to give pay raises to future congresses (was originally proposed as part of Bill of Rights).

27th amendment

Explanation:

27th amendment: No law varying the compensation for the services of the Senators and Representatives shall take effect until an election of Representatives shall have intervened.

this means if Congress votes itself a pay increase, the pay increase does not take effect until after the next election.

i believe the answer is:

-   william jennings bryan is a democrat while mckinley was a republican

at that time, the segment of population that choose for democratic party were the voters with low economic background and vice versa

- william jennings has support of populists and wants to have inflation to farmers while mckinley has support of bankers and businessmen , doesn't want inflation

the fixed value of gold make the large business able to stack up their gold without   being worried that it would devaluated.

- william jennings supported the silver standard while mckinley supported the gold standard

according to jenning, using other metal beside gold could the poor people to have more purchasing power and them advance in the society.

whose power in the senate is equal to the power of the speaker of the house?