The group backed by the billionaire Koch brothers is questioning a plan to spend $1 trillion on U.S. infrastructure.
Adelson's RJC and its mega-donor benefactor have rarely enjoyed such a strong political position as now.
The proposed tax is driving a wedge between the Koch brothers and some of their staunchest political allies.
So far, the opponents of his plan are winning.
Tom Steyer, the biggest individual political donor last year, channels money through a network called NextGen Climate.
Almost four in 10 poll respondents anticipate a better financial situation next year.
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