Actually, I don't know where I can buy tether with Fiat where I can deposit via wire transfer in the U.S?
Seems like Gemini, coinbase don't support tether. Is there any other option?
In case you haven't gotten an answer; Kraken. They support Tether, but honestly I haven't used their service, so it's not a recommendation. I would just use Coinbase or Bitstamp to buy BTC then send it to Binance to trade for whatever.
easy to convert usd to usdc on pro.coinbase.com, then of course send it anywhere to an outside wallet address.