Please point out the Article and Section of the U.S. Constitution which empowers the president to enter in to “executive agreements” with other countries.
Point out the article and section that says he can't. An executive agreement is between our head of state and other heads of state. It's a political agreement rather than a legal one, and no president's successor is bound by it unless he or she wants to be. A treaty, on the other hand, binds all presidents unless the treaty ends.