Answer:
Tariffs and import quotas generally reduce economic welfare.
Step-by-step explanation:
The vast majority of economists (over 90% according to the University of Chicago) agree that tariffs and import quotas generally reduce economic welfare. This is perhaps the normative statement in which economists agree the most.
The reason why is because tariffs and import quotas only benefit a small fraction of domestic producers, to the dismay of a larger number of consumers who end up having to pay higher prices for consumer goods.