The most helpful evidence in developing a fair and effective counterclaim would be:
"As the capital of the United States, Washington, DC was never meant to be a state because the founding fathers feared its people would have too much influence."
This statement directly addresses the foundational intent behind Washington, DC's status and provides a rationale for why it may not be entitled to statehood and full representation, thus serving as a strong counterclaim to the argument that DC residents should receive statehood and representation.