This feels like circular reasoning. In order to execute his (or her) Constitutional Duties, the President must execute laws faithfully. However, the President is extended limitless benefit of the doubt if he decides to not execute the laws put forth by Congress, which means he's not executing his Constitutional duties. So which one is it?

> The law also extends nearly limitless benefit of doubt to the President when he is executing his Constitutional duties.

It does not. In fact, limiting this benefit of the doubt has been a major goal of the conservative legal movement in recent years. If what you say was true then Biden would have had no trouble forgiving student loan debt and requiring generation shifting.