An Empirical Question

I pose an empirical question, namely -

How many people today – especially professional pundits, professors, and politicians – believe simultaneously in both of the following propositions: (1) raising taxes on imports reduces the amount of importing activity significantly enough to cause noticeable increases in activities that are substitutes for importing (such as producing more of the high-tariffed goods domestically); and (2) raising taxes on incomes does not reduce the amount of income-earning activity significantly enough to cause noticeable increases in activities that are substitutes for income-earning activity (such as taking more leisure)?