killing someone (other than in defense of self or someone else)
stealing someone else's property
selling/using illegal drugs
speeding
being married to multiple persons at the same time
having sex with anyone under 15
Most states have laws that make activities like murder, theft, and drug trafficking illegal. Other common illegal activities include driving under the influence, assault, and vandalism. It's always important to familiarize oneself with the specific laws of the state one is in to avoid engaging in illegal activities.
California has the highest number of illegal immigrants in the United States.
Wheelies are generally illegal in most states when done on public roads or highways. It is important to always follow local traffic laws and regulations to ensure safety for yourself and others on the road.
If by "illegal" you mean "against the law," then none. There is no state in the US where same-sex marriage is considered a crime. In fact, in most US states, same-sex marriage is legally recognized. (See related questions below: "What US states have legalized same-sex marriage" and "What US states have banned same-sex marriage.")
It is not illegal to own the Anarchist's Cookbook in the United States. Many people think it is a banned book because of the things that are talked about in it are illegal to carry out. Something is only illegal once you do it (not reading it or thinking about it).
Slavery was illegal in the northern states of the United States, including states like Massachusetts, New York, and Pennsylvania. Slavery was legal in the southern states, such as South Carolina, Georgia, and Alabama.
In most states yes, it is illegal :)
Cockfighting is illegal in most all states. Cruelty laws
Yes, it is in most states. I can't think of any state that it is illegal.
No adultery is not illegal in Louisiana. Adultery is not illegal in most states but it is considered immoral.
No, but in most states it is technically illegal to have sex.
In most states it is illegal to engage in any trade acts with an illegal alien. Some states have allowed this illegal action to occur in their state. It is still illegal at a federal level. Personally, I would have no issue with it being a felony.
Illegal. In most states, it is illegal for breweries to own taverns.
no its not illegal in most states. check with your dept. of transportion
depending on where you're from, in most states it's illegal.
Yes, in most states its considered to be obscene
In most states, it's not illegal to marry a cousin.
Dating itself is very rarely illegal in most countries and states. What might be illegal is sex.