banned for all the evidence is indirect.
When they put his head on the spire of the Empire State building and charge admission, then it's convincing.
Meanwhile, I full well know the charge of a President, but some wrangle/push for things harder than others. FDR was hated, by the Senate, for how aggressive he was in personally tackling the issue of the Great Depression. JFK authorized the Bay of Pigs and his approval rating went up after he admitted to that and was willing to take the blame. Nixon took the heat for the Watergate scandal, although he knew about it, but the work and planning was all done by party men. Bush took one last shot when he signed off on the first big bailout before leaving office, but he wasn't involved in formulating it and figured to let it pass as he was already transitioning out anyway.
So, no, it's not fair to put it all on one person, but it is possible for that person to make something of the position.