A government regulation is that the answer!!
The pentagon papers is a report of the Department of Defense detailing the involvement of the United States' military on Vietnam from 1945 to 1967. The papers were first brought to public by the New York Times in 1971. The papers showed that the Johnson administration had lied about the scope of its actions in the Vietnam War.
For decades there had been significant debate about the amount of currency in circulation. Farmers wanted more to able to have loans at lower interest rates. Obviously this did not appeal to businessmen who would want to have higher interest rates. In the years prior there had been considerable debate over the use of the gold standard and increasing the minting of coins in silver. This would be the last election where a major candidate could win the presidency by winning only by the agrarian or "farmer" vote, due to the increase in urban centers throughout the U.S. passing the threshold.
Racism and didn't speak the language was different