In this excerpt from the Declaration of Independence, the author anticipates and refutes the argument that the American colonies are well represented in the British Parliament and have no right to blame the king. The passage clearly states that the American colonists have warned their British brethren about attempts to extend unwarrantable jurisdiction over them, appealed to their sense of justice and common heritage, and yet, their pleas have fallen on deaf ears. This indicates that the colonists felt their concerns were not adequately addressed or represented in the British Parliament, leading to their pursuit of independence.
By highlighting the failures of the British brethren to heed their warnings and appeals, the author effectively refutes the notion that the American colonies are well represented in the British Parliament and have no grounds to blame the king. The passage underscores the lack of response and understanding from the British authorities, ultimately justifying the American colonists' quest for independence from a system they believed did not serve their interests.