Why is fan running all the time on 2003 Jeep Cherokee Laredo?

Maybe because there's no such car? The last year for the Cherokee was 2001.

I had the same problem on my 2003 Jeep Grand Cherokee. One reason it will stay on is after you wash it or a good amount of water gets in the engine. If it is below freezing the water freezes in the radiator causing the fan to continuously run