Clients residing outside the U.S. will be unaffected.
The regulator's stance contrasts with that of the U.S. Securities and Exchange Commission.
Blockchain.com is the latest crypto exchange to delist XRP.
Tetragon was one of Ripple Labs' big financial backers.
Over $1.5 billion in XRP futures have been liquidated since the start of November.
Crypto money manager Bitwise has liquidated $9.3 million worth of XRP in its crypto index fund.
"MoneyGram will continue to monitor the situation" following an SEC lawsuit against its part-owner, Ripple, a spokesperson told CoinDesk.
As expected, the SEC has filed suit against Ripple, saying it violated federal securities laws in selling $1.3 billion in XRP over the past seven years in an "ongoing" sale.
Already, CrossTower, a small exchange that opened in June, is considering delisting the cryptocurrency.