“Fossil fuel interests see a clear benefit in promoting direct air capture as a means to preserve the dominance of dirty fossil fuels,” said one advocate.
“Direct air capture is expensive, unproven, and will ultimately make almost no difference in reducing climate pollution… Capturing just a quarter of our annual carbon emissions would require all of the power currently generated in the country.”
It's completely stupid, especially when carbon itself is untaxed. You're spending $1B to suck something out of a vast and difficult medium that's getting chucked up there willy nilly by anyone who wants to? Why not spend the money putting systems in place to block its initial exhaust? It would be far more cost effective.