Follow my logic stream

In 1909, Congress amended the Constitution to allow it to create income tax.

In parallel...
In 1909, a dry spell began in San Bernardino County of southern California that lasted until the 6th of May in 1912, a stretch of 994 days! Another dry spell, lasting 767 days, then began in October of 1912.

Logical conclusion:  Congress caused global warming that caused drought by creating income tax.

Historical note:  Attribution for a nearly 3 year lack of rain was not attributed to global warming rather...people generally said, "Yikes it's hot and dry". 

Author's note:  Notoriously wet and cool periods that follow this extraordinary dry period were attributed to an increase of Moose flatulence in what would later become the 49th state (Alaska) by some fringe underground newspapers.