The arguments for restricting trade

Suppose there is a policy debate over whether the United States should impose trade restrictions on imported ball bearings:

The president of the United States explains that it is necessary to impose trade restrictions, such as a tariff, on the ball$-$bearing industry to protect workers in the domestic ball$-$bearing industry. The president claims that without trade protection, there will be layoffs, causing many U$.$S$.$ workers in the ball$-$bearing industry to be unemployed.

Which of the following justifications is the president using to argue for the trade restriction on ball bearings?

Infant industry argument

Employment argument

National security argument

Cheap foreign labor argument