They feared the retaliation of the U.S. and the fear of nuclear war
The president during 1812 was James Madison, his presidential term was 1809 to 1817.
Shortly after 10 p.m. on April 14, 1865, actor John Wilkes Booth entered the presidential box at Ford's Theatre in Washington D.C., and fatally shot President Abraham Lincoln. As Lincoln slumped forward in his seat, Booth leapt onto the stage and escaped through the back door. A doctor in the audience rushed over to examine the paralyzed president. Lincoln was then carried across the street to Petersen's Boarding House, where he died early the next morning.
