According to Axios, the Biden administration made the decision “at least for the time being,” which suggests Morocco must increase lobbying to secure a firm and lasting position from the US.

Axios: Biden to Uphold US Recognition of Morocco’s Western Sahara Sovereignty
Axios quoted two sources familiar with today’s call between Bourita and Blinken, saying that the US secretary told he Moroccan FM that Biden would not reverse Trump’s recognition of Morocco’s sovereignty over Western Sahara.