cheapest widely used blockchain that can transfer USDT?

Besides TRX, is there another blockchain that can store USDT coins and has low fees? I heard of the binance blockchain. I don't think binance blockchain is safe with the stuff going on with binance. Ethereum blockchain is expensive.

I know of the IRS starting to crackdown on Paypal and other payment services by forcing them to issue 1099 to people getting $600 a year. I figure a USDT enabled blockchain will have stronger demand come 2024. From an investment standpoint, would buying a USDT blockchain crypto like TRX be a potential winner?

I know some people will say litecoin or some stuff like Dash or BCH. Many people like having USDT since it is pegged to the dollar.