Because the legislative branch is a very important branch. It showed the power that the House and Senate have over the American people.
Answer:
The president of Mexico (Spanish: Presidente de México), officially the president of the United Mexican States (Spanish: Presidente de los Estados Unidos Mexicanos), is the head of state and head of government of Mexico
To shortly answer your question, an ethic community is a community of people who relate to each other in terms of culture, traditions, and overall ethnicities. An example of an ethnic community (I am speaking on myself) would be Juneteenth. In no way do I mean offense, it is just a mere example. If you need better understanding, let me know and I will gladly assist you.