This is a terrible sentence that encrypts their intended point.
“Current emissions” do not have the agency implied by “condemn”. One might get the impression that the “1.2 average US citizens” are doing the condemning, but the average US citizen does not have enough agency to move the needle one way or the other.
The government (supposedly, a sovereign power concerned with its own continued existence) ought to regulate the corporations (supposedly, rational agents concerned with their own continued existence) that are contributing almost all US emissions. Those two are the ones doing the condemning.