Jim Macklin wrote:
Income taxes, fuel fees, some airport have landing, tie-down
and other fees. But at the Federal level, so far, most
services are paid from fuel and income taxes, as money is
appropriated by Congress.

same in other countries like UK, where taxes -- and quite
a bit more than in US on the fuel alone -- pay for the
same services; yet, it doesn't prevent them from asking for
additional fees (twas 160 UK Pounds at the time when
I got my PPL there, probably a heck of a lot more now);

--Sylvain