On the other hand, the United States said it will not accept Palestine’s request until a comprehensive agreement is reached with its ally, Israel.

The "comprehensive agreement with israel" in question:

"Members of [the US's] U.N. delegation reiterated Monday that the Palestinian Authority needs to exert control over all of the Palestinian territories and negotiate statehood with Israel before it wins statehood"

The Palestinian Authority is just an israeli tool these days that Netanyahu fully supports. It allows israel's settler colonialism and arrests Palestinian activists and Palestinians protesting against them.

So basically the US will only allow "negotiations" if the entirety of Palestine is colonized.