Here’s what people are saying about the proposal:

Patrick Bennett, head of macro strategy for Asia at Canadian Imperial Bank of Commerce

It’s a fairly whacky idea that they would be able to force Hong Kong off the peg by some means. I’ve been against the idea that Kyle Bass and others trying to break the peg — that has been a spectacularly unsuccessful idea so far, and I expect it to be the same.

Stephen Innes, chief global market strategist at AxiCorp

Why this is bad not to mention an unlikely move: First, direct U.S. action against the peg could trigger China’s response by putting U.S. assets, including USTs or equities. Second, such a move could destabilize USD pegs elsewhere, including U.S. allies around the world, especially those in the Middle East. Third, the unthinkable instability that it would trigger in the USD-based global financial ecosystem could drive a selloff in US equity markets – an outcome abhorrent to the White House ahead of the November presidential election.

Xia Le, chief Asia economist at BBVA Hong Kong

It’s technically difficult to impose, and it’ll hurt U.S. a lot. The peg is maintained by Hong Kong, which doesn’t need approval from the U.S. and not something the U.S. could easily manipulate. Technically, it’s very hard for them to prevent any businesses from investing in the city or limiting the ability of Hong Kong banks to buy U.S. dollars.

Carie Li, an economist at OCBC Wing Hang Bank

At the moment, the Trump administration isn’t seriously considering this as it’s very risky for them. It’s more about specific restrictions for financial institutions under the sanctions. Hong Kong is the world’s third-largest U.S. dollar trading center, which would mean if the HKD can’t be pegged to the USD it would be unfavorable to the U.S. by curbing the number of transactions in U.S. dollars and would lower investor confidence in the greenback.

Becky Liu, head of China macro strategy at Standard Chartered Bank

At this stage I personally assign a relativity low possibility for this to happen. Having said that, in the recent days U.S. has taken some totally unexpected actions by withdrawing from the WHO. So the likelihood of the U.S. doing something is still very likely, it’s just likely to be less drastic in terms of impacting the convertibility between the HKD and the USD, like setting a limit on how much exposure banks are able to have on the Hong Kong
dollar or setting limits on the amount of exposure U.S. companies can have towards the Hong Kong dollar.