President Trump’s selection of Mark Meadows as his new White House chief of staff comes at one of the most consequential times in our country’s history.

Chiefs of staff have always played a critical role in the West Wing, but this time it’s different. We’re at war — but unlike any other battle in recent history, this invisible enemy has invaded our shores, making Meadows not just a presidential chief of staff, but more importantly, chief of staff to a wartime president.