Why are Executive Orders Limited? Give Examples why?

-EO are Limited as they can be overturned by the Supreme Court or by a new Law of Congress -Obama ordered Guantanamo Bay to be Closed in 2009, yet it remains open in 2021, because of Congress's Intervention -Trump tried to use an EO to carry out his Campaign Promise for a Wall, which failed as Congress blocked Funding for such a Project -EO can also be Overturned by other Future Presidents. Biden issued 60 EOs in his first 100 Days as President, 24 of which directly Reversed Policies of Trump