The specific laws governing the use of headlight and taillight covers vary from state to state. In some states, it is illegal to drive with any type of cover on the lights, while in other states, it is only illegal to drive with a cover that obscures the light. In general, it is best to err on the side of caution and avoid using any type of cover on your car's headlights or taillights.
If you are caught driving with an uncovered light, you may be pulled over by the police and issued a ticket. The fine for this violation can vary depending on the jurisdiction. In some states, you may also be required to attend a hearing before a judge.
In addition to the legal consequences of driving with an uncovered light, there are also safety concerns to consider. A damaged or uncovered light can make it difficult for you to see the road and may also make it difficult for other drivers to see you. This can increase your risk of being involved in an accident.