Bitrefill now has Prepaid Mastercard gift cards for the US.

https://www.bitrefill.com/buy/prepaid-mastercard-usa/?hl=en

And as a small added bonus you get 5% back at some places:
https://www.myprepaidcenter.com/page/mastercard-univ

Unlike a lot of other places looks like NO activation fees that I can see. At least for now.

Will test in a few days unless someone else gets to it 1st.

-Dave