We dodged a huge bullet in the US with this. We already pay _excessive_ amounts of federal income tax for extreme inefficiency, the vast majority of it simply being funneled into the pockets of the ultra wealthy.
The top 10% of taxpayers contribute 72% of all income tax, so 90% of them aren't really contributing a lot, so per tax payer it's not a lot.
The overall amount is staggering, yes.
If anything it seems inefficiencies tend to occur when people interfere with the government funding things, like CA high speed rail having their federal funding appear and disappear erratically depending on who's in power, throwing off all the construction plans.