Are trading bots legal in the US?

Are Trading Bots legal to use in the United States? I've heard some mixed opinions on the matter and I'm curious to know the truth. I understand that bots can automate trades and potentially increase efficiency, but are there any legal restrictions or regulations that I should be aware of before using one? Are there any specific rules or guidelines that govern the use of trading bots in the US? I'd appreciate any clarification on this matter.