Personally, I am not surprised to see the sign of Scorpio hold the most Sun Signs for US Presidents considering its secrets Presidents' are inclined to keep.   

Scorpio's make good criminals too, so I'm not surprise to see 46 make the Scorpio List. 

President Lincolns' Sun was 23° Aquarius the sign of FREEDOM, and it was he who put pressure on the slave states to abolish slavery. 

If your Astrological minded, can you a relate something astrological to any of the US Presidents Sun Signs and what they did while president?

Meanwhile say a prayer for President Carter as he rests in Hospice.