No taxation without representation the House of Commons must include colonial representatives when it voted on colonial matters, or operate by using the consent of the colonial Assemblies. The Americans rejected the Stamp Act of 1765 brought in by British Prime Minister George Grenville, and violently rejected the remaining tax on tea imports, under the Tea Act passed in May 1773, at the Boston Tea Party on December 16, 1773. The Parliament considered this an illegal act because they believed it undermined the authority of the Crown-in-Parliament. When the British then used the military to enforce laws that the colonists believed Parliament had passed
No taxation without representation is more, it is itself an eternal law of nature; for whatever is a man's own, is absolutely his own; no man has a right to take it from him without his consent, either expressed by himself or representative; whoever attempts to do it, attempts an injury; whoever does it, commits a robbery; he throws down and destroys the distinction between liberty and slavery. Taxation and representation are coeval with and essential to the constitution. … [T]here is not a blade of grass growing in the most obscure corner of this kingdom, which is not, which was not ever, represented