Until the Austin council met to ratify Texas' state funding for the event, the entire Circuit of the Americas project was in doubt.
And even before that, a group of taxpayers had filed legal action against comptroller Susan Combs' earlier approval of the annual $25m state subsidy.
The Austin American Statesman reports that an application to immediately block the release of the money with a restraining order was heard last Friday.
It was rejected by Travis county state district judge Rhonda Hurley.
The plaintiff's lawyer Jennifer Riggs said: "We're not certain, in light of the lack of support from the court, whether we're going to pursue the lawsuit."