Donald Trump on Monday reiterated his plans to levy tariffs as high as 100% on movies filmed outside of the United States, whether they are produced by foreign-owned film companies or Americans.

The president wrote on Truth Social that the fault of America’s supposedly “stolen” movie business lay with California’s Democratic governor, whom he frequently targets for scorn.

He added that the would be imposing a 100% tariff to stop what he called a “never ending problem”, though it was not stated when those tariffs would be put into place.