I am doing a little research on this so far I have found that a Laser jammer IS illegal in the following states Minnesota (Statutes 2002, 169.14), California (Sec. 1, Ch 493.28150) and Utah (C. 41-6-52.7, 1998). as far as radar jamers go I found this.
California
Radar Jammers are illegal in California. Radar Detectors are legal.
Commercial Use
The Department of Transportation bans the use of detectors in commercial trucks or vehicles weighing over 10,000 lbs.
Minnesota
Radar Jammers are illegal in Minnesota. Radar Detectors are not.
Military Restrictions
By Federal Law, Radar Detectors and Radar Jammers are illegal to use on any military base.
Nebraska
Radar Jammers are illegal in Nebraska. Radar Detectors are not.
Oklahoma
Radar Jammers are illegal in Oklahoma. Radar Detectors are not.
Virginia
Virginia State Law deems the use of Radar Detectors and Radar Jammers as illegal.
Washington DC
The laws of Washington DC make the use of of Radar Detectors and Radar Jammers illegal
In 1991, 34.7GHz frequency radar guns were introduced, which motivated radar detector companies to introduce Ka band. In 2002 Bee POP 3 was introduced at 33.8GHz. This is the super fast burst radar, which is 3x faster than standard radar. 35.5GHz Ka was also introduced in 2002 by Stalker. These two events caused radar detector companies to introduce “Superwide Ka” band detection. Today, a Radar Detector has to detect X, K, Ku, KA (4 frequencies) and laser. However, the radar jammer is still providing only X and K band support, which at most is 30% of the total radar used.
So basicly a radar jammer does you no good any more,and a laser jammer is Illegal in some states.