I thought signing up for Bittrex I can exchange USD to Bitcoin Cash, but instead it requires USDT.
Anyone know of an Exchange for USD to Bitcoin Cash and viceversa ?
Try kraken they have bch-usd trading pair. i would advice you to stay far away from bittrex, they've been locking accounts for no reason, their support is super slow.
I also think it's possible to perform such transaction securely on Kraken. I left Bittrex this summer because they suspended thousands of accounts without informing the owners of them.