How do I transfer Usdt to Polkadot?

I'm trying to figure out how to transfer USDT to Polkadot, but I'm a bit lost. Could you please explain the steps involved in this process? I've heard that it might involve using a bridge or some sort of intermediary platform, but I'm not entirely sure. Could you clarify the specifics for me? Also, are there any fees or limitations I should be aware of when making this transfer? It would be great if you could provide some insight into this matter. Thank you in advance for your help!