America may be one country, but its laws can change dramatically once you cross a state line. Each state has the authority to write and enforce many of its own laws, which has created a patchwork of rules across the country. According to U.S. News & World Report, state regulations contain hundreds of millions of words, with millions of individual restrictions. What is perfectly legal in one state can lead to fines or criminal charges in another.
These legal differences matter whether you’re traveling, moving, studying law, or just curious about unusual state rules. Here are 15 activities that are legal in some states but prohibited in others.
Recreational Marijuana Use
Recreational marijuana is legal in many states, allowing adults to purchase and use cannabis under state law. Colorado and Washington became the first states to legalize recreational marijuana through voter-approved measures in 2012, and many others have followed since then.
That doesn’t mean it’s legal everywhere. States such as Indiana, Iowa, and Kansas still prohibit recreational marijuana, and cannabis remains illegal under federal law as a Schedule I controlled substance.
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Plastic Bag Bans
Many states have passed laws limiting or banning single-use plastic bags to reduce litter and pollution. California became the first state to adopt a statewide plastic bag ban in 2014, and several other states now have similar restrictions.
Other states have taken the opposite position. Texas, for example, has blocked local governments from creating their own plastic bag bans, allowing businesses to continue offering them.
Open Carry of Firearms
Gun laws differ widely across the United States, especially regarding openly carrying firearms. In states such as Texas, Nevada, Mississippi, and Michigan, open carry is generally allowed under state law, although the exact rules and permit requirements vary.
New York has much stricter firearm regulations. Carrying a handgun openly is generally prohibited, and firearm ownership and carrying require licensing under state law.
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Abortion Laws
Abortion laws changed dramatically after the U.S. Supreme Court overturned Roe v. Wade in 2022. The decision returned authority over abortion laws to individual states.
States such as Alabama, Kentucky, and Idaho have enacted strict abortion bans or severe restrictions. California, Oregon, Colorado, Illinois, and several others continue to protect access to abortion services.
Gambling
Gambling laws vary just as much as any other state regulation. Nevada remains famous for its casino industry, while many states now permit sports betting, lotteries, or commercial casinos.
Utah and Hawaii remain the only two states that prohibit nearly every form of legalized gambling, including casinos, sports betting, lotteries, and fantasy sports.
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Prostitution
Prostitution is illegal throughout almost the entire United States. Nevada is the only exception, where licensed brothels operate legally in certain rural counties.
It’s worth mentioning that prostitution is still illegal in Las Vegas and the rest of Clark County, despite Nevada’s reputation.
Physician-Assisted Dying
Medical aid in dying remains one of the country’s most debated legal issues. Several states have adopted “Death with Dignity” laws that allow eligible terminally ill adults to request medication to end their lives under strict medical guidelines.
States including Oregon, Washington, California, Colorado, Vermont, Hawaii, Maine, New Jersey, New Mexico, and Montana allow some form of physician-assisted dying, while it remains illegal in most other states.
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Lane Splitting
Lane splitting allows motorcycles to ride between lanes of slow-moving or stopped traffic. California has long recognized the practice as legal under certain safety guidelines.
A few other states have approved limited versions. Arizona allows lane filtering at certain intersections, Utah permits it under specific traffic conditions, and Montana has its own restrictions. Most states still prohibit lane splitting altogether.
Death Penalty
Capital punishment remains legal in some states and banned in others. Several states continue to carry out executions, while others have abolished the death penalty entirely or placed moratoriums on its use.
Texas and Oklahoma continue to use capital punishment, while states such as New York and New Jersey have eliminated it.
Voting Rights for Felons
Rules about voting after a felony conviction differ from one state to another. In many states, voting rights are automatically restored after a sentence is completed, though the timing varies.
Some states place additional restrictions. A handful permanently remove voting rights for certain felony convictions unless the individual receives clemency or another form of restoration.
Incest Laws
Laws covering consensual adult incest differ across the country, although the practice is illegal in nearly every state.
Rhode Island and New Jersey do not criminalize consensual sexual relationships between certain adult relatives, though marriage between close relatives remains prohibited. Ohio has limited exceptions within its criminal statutes, making its laws different from most other states.
Self-Service Gas
Pumping your own gas is routine almost everywhere in the United States.
New Jersey is the lone exception. State law still requires gas station attendants to pump fuel for customers, making it the only state where self-service gasoline remains illegal.
Exotic Pets
States have very different rules regarding exotic animal ownership. California bans many exotic species outright, while states such as Texas allow ownership of certain animals with permits or registration requirements.
Hawaii has some of the strictest rules in the country because of its fragile ecosystem. Many non-native animals cannot legally be owned or imported into the state.
Raw Milk Sales
Supporters of raw milk value its natural qualities, while health officials warn about the risk of harmful bacteria. That debate has produced very different state laws.
New Jersey prohibits the sale of raw milk entirely. States such as California and New Hampshire allow sales but regulate production, testing, and distribution.
Cutting Wild Cactus
In desert states, native cacti receive legal protection against illegal harvesting. Arizona requires permits before removing many wild cactus species, and Texas also protects certain native plants from unauthorized collection.
These laws help preserve slow-growing desert plants that can take decades to mature, while states without native cactus populations generally have no comparable restrictions.
