Taxing investment income at the same level as earned income
Every economist says this is a no no. In fact, the general agreement (on efficiency grounds, if not equity) is that investment income shouldn’t be taxed and even if it is, on equity, at lower rates than income.
Because deadweight costs.
A financial transaction tax
Ditto, deadweight costs again.
Much of this we derive from the not right wing at all Nobel Laureate Sir John Mirrlees.
It’s not just that he’s a deluded little fascist it’s that he’s an ignorant one.