A/C compressor keep blowing on 1995 Cadillac DeVille

What can cause a fuse to keep blowing? At first the compressor would come on and blow thru the defrost vents....when I put in drive it blows the fuse then the cold air becomes hot...then it blow through the vents...I tried un-hooking the plug in to the compressor. It still blows the fuse.

Asked by for the 1995 Cadillac DeVille