Can U.S. citizens use Kraken?

Hello, I am a U.S. citizen and I am interested in investing in cryptocurrencies. I've heard of Kraken, a popular crypto exchange platform, and I'm wondering if U.S. citizens are allowed to use it. I'm concerned about any potential legal restrictions or regulations that might affect my ability to trade on Kraken. Could you please clarify if U.S. citizens are indeed eligible to use this platform, and if there are any specific rules or guidelines I should be aware of before getting started? Thank you for your help!