Grenell was a regular contributor on Fox News's Tucker Carlson Tonight during the first few months of his ambassadorship in Germany. In November 2018, he appeared on the show and repeated his criticism of Angela Merkel's immigration policies. Grenell compared Merkel unfavorably to the recently-elected Chancellor of Austria Sebastian Kurz, who (according to Grenell) "won in a very big way" because of his strict stance on immigration.