Answer:
The Twenty-sixth Amendment (Amendment XXVI) to the United States Constitution prohibits the states and the federal government from using age as a reason for denying the right to vote to citizens of the United States who are at least eighteen years old.
powered aircraft [the answer doesn't need explaining]
Brief notes
congressional members should always be elected by popular vote. This is in line with the republican principle and also to ensure that the leaders do not become puppets of any other thing or person, apart from the public good and sentiments. By electing the leaders through popular mandate, the independence of the house is also protected, and thus checks and balances is ensured.
