They haven't.
The Executive Branch of government did not exist until the United States Constitution was signed in 1787.
Many individuals claim many different names of the first president under the "Articles of Confederation"; however, during that time, only a Legislative Branch existed, hence the presidential title did not exist.
The first head of the Executive Branch was George Washington.
Martin Van Buren was the first president to be born in the US under the new American government. He was born on December 5, 1782.
The US has only one president and he is the chief executive over the US government.
The president would be the person who came out on top in the election; the person in second place would be vice president.
The executive branch of the US government is headed by the President.
The President of the United States holds the highest office in the US government
Thomas Jefferson was the US President who first spoke of a "government of the people" in his inaugural address in 1801. He emphasized the importance of citizen participation in government decision-making and the need for a government that serves the interests of the people. Jefferson believed in a democratic system that respects the voice and will of the people.
The first US president was George Washington.
The executive branch of the US government is headed by the President.
George Washington was the first President of the US and John Adams was his VP.
The executive branch of the US government is made up of the president and vice president.
To the extent that there is a single leader of the US government, the President, as head of the Executive branch of the government, is the leader. Because the US federal government is divided into three equal branches, it could be argued that there is no one leader of the government.
The President of the US controls the Executive Branch of the government.