The Constitution held for 200 years. When FDR tried to pack the court in 1937 by the same method Holder is threatening, members of his own party denounced him. Today we have a completely despicable dem party.
Yes FDR tried it and the perception is the effort failed but the truth is to avoid the action the SC rolled over and gave the New Deal a pass sort of like Obongo care. I believe it was Jefferson who wanted to outlaw political parties, he saw they would come when said despicable party would emerge and carve out the countrys core to achieve total power and here we are.