When the president of the United States host the president of France at a dinner at the White House what role is president performing

In a situation when the president of the United States host the president of France at a dinner at the White House, the president is performing the role of "Head of State".

Explanation:

The Head of the state is the person who represents a state to represent it among others. With the authorization of that country, its people, and its government to be presented as that country's leader. It can execute power or just be perceived as that country's representant depending on the type of government his or her country has. For example the emperor of japan is only head of state, unlike the president of the united states that holds power.

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