U.S. President Donald Trump said Monday he will push for a "reciprocal tax" against countries, including allies of the United States, that levy tariffs on American products, but officials did not provide details on how such a tax would be structured or the goods to which it would apply.

During his populist 2016 presidential campaign, Republican Trump railed at countries that had trade surpluses "taking advantage of the United States," and he revisited the theme Monday.

"We cannot continue to let people come into our country and rob us blind and charge us tremendous tariffs and taxes and we charge them nothing," Trump told reporters at a White House event to announce a proposed infrastructure plan.