Since it is election day in the U.S., we look at how farm income has performed under various presidents. Presidents receive the credit or blame for the overall economy whether it is deserved or not. As the current farm payments attest, presidents likely have more control over farm income than the national accounts.  President Franklin Roosevelt entered office with farms imploding from the Dust Bowl and an economic recession, but his Agricultural Adjustment Act of 1933 turned things around. He served a record 12 years in the White House and gets credit for the largest run of compound annual growth in farm income. His immediate predecessor, Herbert Hoover, had the worst. Richard Nixon had little interest in agriculture, but the second-...