When it comes to forex trading, it is important to choose a broker that is regulated in the United States. This ensures that the broker operates in compliance with the rules and regulations set forth by regulatory bodies, providing a level of safety and security for traders. Here are some forex brokers that are regulated in the US:

1. OANDA: OANDA is a well-established forex broker that has been operating since 1996. It is regulated by the Commodity Futures Trading Commission (CFTC) and is a member of the National Futures Association (NFA). OANDA offers a range of trading instruments and platforms, catering to both beginner and experienced traders.
2. TD Ameritrade: TD Ameritrade is a reputable brokerage firm that offers forex trading services. It is regulated by the CFTC and is also a member of the NFA. TD Ameritrade provides an intuitive trading platform, educational resources, and access to a wide range of markets for forex trading.
3. Forex.com: Forex.com is another popular forex broker that operates in the US market. It is regulated by the CFTC and is also a member of the NFA. Forex.com offers competitive spreads, a variety of platforms, and a wide range of trading tools and resources.
4. IG US: IG US is the US division of IG Group, a global forex broker with a strong reputation. It is regulated by the CFTC and is a member of the NFA. IG US offers competitive pricing, advanced trading platforms, and a wide range of educational resources for traders.
5. Interactive Brokers: Interactive Brokers is a well-known brokerage firm that provides forex trading services. It is regulated by the CFTC and is a member of the NFA. Interactive Brokers offers a variety of trading platforms, competitive pricing, and access to a diverse range of markets.

These are just a few examples of forex brokers that are regulated in the US. It is important to research and compare different brokers to find the one that best suits your trading needs. Remember to consider factors such as regulation, trading conditions, customer support, and available trading tools and resources.