26 that he was considering "friendly offers of foreign assistance" to suppress the rebellion. A pro-American minority in Parliament warned that the government was driving the colonists toward independence. Toward independence Thomas Paine's pamphlet Common Sense was published in January 1776, when the king clearly was not inclined to act as a conciliator. Paine, recently arrived in the colonies from England, argued in favor of colonial independence, advocating republicanism as an alternative to monarchy and hereditary rule. Common Sense made a persuasive, impassioned case for independence, which had not been given serious consideration in the colonies. Paine linked independence with Protestant beliefs, as a means to present a distinctly American political identity, and he initiated open debate on a topic few had dared to discuss. Public support for separation from Great Britain steadily increased after the publication of Common Sense. Some colonists still hoped for reconciliation, but public support for independence further strengthened in early 1776. In February 1776, colonists learned of Parliament's passage of the Prohibitory Act, which established a blockade of American ports and declared American ships to be enemy vessels. John Adams, a strong supporter of independence, believed that Parliament had effectively declared American independence before Congress had been able to. Adams labeled the Prohibitory Act the "Act of Independency", calling it "a compleat Dismemberment of the British Empire". Support for declaring independence grew even more when it was confirmed that King George had hired German mercenaries to use against his American subjects. Despite this growing popular support for independence, Congress lacked the clear authority to declare it. Delegates had been elected to Congress by 13 different governments, which included extralegal conventions, ad hoc committees, and elected assemblies, and they were bound by the instructions given to them. Regardless of their personal opinions, delegates could not vote to declare independence unless their instructions permitted such an action. Several colonies, in fact, expressly prohibited their delegates from taking any steps toward separation from Great Britain, while other delegations had instructions that were ambiguous on the issue; consequently, advocates of independence sought to have the Congressional instructions revised. For Congress to declare independence, a majority of delegations would need authorization to vote for it, and at least one colonial government would need to specifically instruct its delegation to propose a declaration of independence in Congress. Between April and July 1776, a "complex political war" was waged to bring this