The original Binance platform doesn’t allow US users to open an account and participate in Binance trading and exchanging.
However, there is a separate Binance website specifically designed for US users (Binance.us). According to the IRS, crypto is treated as property for tax purposes, so you’re liable for any capital gains when selling or trading cryptos. By reporting cryptocurrency on your tax return, you must calculate trades with USD equivalent for the IRS Form 8949.