The Biden administration actually believes that the Chinese can’t find a workaround for its ban on advanced computer chips to China. Just like the Russians couldn’t find a workaround to the sanctions imposed on them by the U.S. and NATO. From Mike Whitney at unz.com:

The Biden administration has imposed a blockade on advanced computer chips headed for China. The action is expected to slow China’s technological development while inflicting serious damage on the broader economy. The strategy has been widely praised by the media and foreign policy experts, but a growing number of analysts wonder if the plan could backfire?
Dan Wang is skeptical that Biden’s blockade will succeed in the way the authors had intended. Wang is a technology analyst who presented his views in an editorial at the New York Times. Here’s what he said:
The White House is intent on outcompeting China on technology. The ground on which this competition is taking place is chip making. But the Biden administration shouldn’t sit back and savor this accomplishment for one reason: What if its core belief — that advanced semiconductors are one of the critical fronts in the contest — is wrong?…
America’s actions are driven by the assumption, articulated by the national security adviser, Jake Sullivan, that computing chips are a force multiplier technology, staking it as critical to continued U.S. leadership. But what if the U.S. government is too focused on the most novel technologies rather than the most important ones? I believe America is in a great power contest with China, one that will be multidimensional and protracted, making it unlikely that success hinges solely on who can stay ahead in a few advanced technologies….