The Koch Network is launching a television and radio advertising campaign to push back against President Donald Trump’s tariffs.

According to a press release, the Freedom Partners Chamber of Commerce is heading the six-figure effort, which will target residents of Washington, D.C. and conservative talk radio. According to a transcript of the radio ad, the campaign will focus on recent economic growth. “To keep growing, we must keep trading. Tariffs are not the answer,” the 30-second radio advertisement says. 60-second TV advertisements will air in the D.C. area on June 25, and the radio message will begin broadcasting nationally on the same day.