Trump’s plans for a crypto reserve including bitcoin and XRP drew skepticism from the likes of Coinbase’s billionaire CEO Brian Armstrong and Palantir cofounder Joe Lonsdale, as a crypto rally began fizzling on Monday.

The rift over the president’s proposed grab-bag of tokens signals a rocky political road ahead for one of the administration’s most audacious tech proposals. Underlying the issue: His administration has yet to articulate how it intends to reconcile the president’s “America First” agenda with crypto networks that are intended to be decentralized and borderless by design.

Prices for bitcoin and the like have soared after Donald Trump set out plans for a U.S. cryptocurrency reserve. He said in a social media post that the stockpile would include bitcoin and ether, as well as smaller tokens XRP,