Economists usually have a keen eye for tradeoffs. They understand you cannot have your cake and eat it, too....Economics is about making choices. We face trade-offs. If you want more of this, you must give up some of that.

We could rely a little more on tariffs and a little less on income taxes, or a little less on tariffs and a little more on income taxes. It is at least conceivable that, given the relatively low tariff rate and the relatively high marginal income tax rates, the deadweight loss caused by a marginally higher tariff rate would be more than offset by the gains from trade caused by a marginally lower income tax rate.

"It is not enough to say that tariffs are bad. One must also show that tariffs are worse than the available alternatives."

The relevant question is whether the marginal deadweight loss associated with the tariff is greater than the marginal deadweight loss associated with the income tax.