How to use Phemex in the US?

Hello there, I'm curious about using Phemex in the United States. Could you please elaborate on the process and any potential challenges or limitations I might face as a US-based user? Are there any specific steps I need to follow to set up an account and start trading? Also, I'd like to know if there are any restrictions on the types of cryptocurrencies I can trade or the amount of leverage I can use. Additionally, how secure is Phemex when it comes to protecting my personal information and funds? Any insights or advice you can provide would be greatly appreciated. Thank you in advance!