Early in his career, this man advocated a form of nullification in opposing the Conscription Act and attended the Hartford Convention.  This man argued McCulloch v. Maryland and Gibbons v. Ogden before the Supreme Court. He negotiated a treaty with Britain agreeing to cooperate against the slave trade and delineating the Maine border, and he demanded "Liberty and Union, now and forever, one and in
Early in his career, this man advocated a form of nullification in opposing the Conscription Act and attended the Hartford Convention.  This man argued McCulloch v. Maryland and Gibbons v. Ogden before the Supreme Court. He negotiated a treaty with Britain agreeing to cooperate against the slave trade and delineating the Maine border, and he demanded "Liberty and Union, now and forever, one and inseparable" in a namesake series of debates with Robert Hayne.  For 10 points, name this Massachusetts Senator and Whig who argued forcefully for American nationalism against secession and nullification.
Early in his career, this man advocated a form of nullification in opposing the Conscription Act and attended the Hartford Convention.  
Daniel {Webster}