Both Trump presidencies have really shown how little check there is on the White House when it comes to coordinating among these agencies. Heck literally one of the first the things he did in Jan 2016 is try to find out which park ranger posted a sparse inauguration photo. It wouldn't even occur to me that he was the de facto boss of millions of people in this way

Cause consider the previous status quo. It was considered somehow scandalous for Bill Clinton to have an opinion on what his AG Janet Reno was doing