Trump pointed to U.S. trade deficits with other countries in his defense of the tariffs, singling out China, which was hit with a 34% tariff last week.
Tariffs on the Heard and McDonald Islands, which are largely populated by penguins and uninhabited by people, prompted jeering on social media last week.
The California senator added that the current state of the U.S. economy and the Democratic Party's "failure" to address it cost them the White House last year.
Rollins argued the president "evoked" change to improve the United States's standing in the market, and stated dozens of countries have now "come to the table."
The encouragement was needed due to a six-week slump in the S&P 500. By stock market close Friday, the day before the 10% baseline tariff began, it dropped 10.5%.