The nullification doctrine came before Congress in the winter of 1829-30, and was debated in the most famous of American debates. Clay was not there to speak for his tariff system, but a greater orator than Clay took up the challenge. In the greatest of all American orations since Patrick Henry spoke for liberty, Webster spoke for union _and_ liberty, and Americans will never forget his words until liberty and union are alike destroyed. Jackson was the last man in the country to miss their force. No orator himself, he yet knew how to give words the power of a promised or a threatened deed. Not long after the debate, there was a public dinner of the States'-Rights men in Washington to celebrate Jefferson's birthday. Jackson did not attend, but he sent a toast, and probably the seven words of his toast were more confounding to the nullifiers than all the stately paragraphs of Webster's oration. It was: "Our Federal Union: it must be preserved." Calhoun's toast was: "The Union,--next to our liberties the most dear,"--and Jackson, who was just learning that he had been mistaken about Calhoun in 1818, began now to see clearly that the great South Carolinian was in sympathy with the nullifiers. Many South Carolinians, however, were still hoping that the President would not take any active measures to defeat their plan. Some of them went on hoping until the Fourth of July, 1831, when there was read, at a public dinner of Union men at Charleston, a letter from Jackson which left no doubt of what he meant to do if they kept on. He was going to enforce the laws and preserve the Union.