The primary concern was related to the number of congressmen from free and slave states. If Missouri was admitted into the Union as a slave state, the congress would have more Southerners than Northerners in the congress which would be bad for slaves everywhere. Northerners therefore asked that if Missouri enters as a slave state, Maine has to be separated and enter as a free state.<span />
The purpose of this amendment was to requires the Senate to choose between the candidates with the "two highest numbers" of electoral votes. In this case President and vice president.
Government positions paid a lot of money