Returning home to practice law, Blair was admitted to the Virginia bar in 1757 and quickly thrust into public life. He began his public career shortly after the close of the
French and Indian War with his election to the seat reserved for the College of William and Mary in the
House of Burgesses (1766–1799). He went on to become clerk of the Governor's Council, the upper house of the colonial legislature (1770–1780). Blair originally joined the moderate wing of the
Patriot cause. He opposed
Patrick Henry's extremist resolutions in protest of the
Stamp Act, but the dissolution of the House of Burgesses by Parliament profoundly altered his views. In response to a series of taxes on the colonies passed by Parliament, Blair joined
George Washington and others in 1770 and again in 1774 to draft nonimportation agreements which pledged their supporters to cease importing British goods until the taxes were repealed. In 1775, he reacted to the
British Parliament's passage of the
Intolerable Acts by joining those calling for a
Continental Congress and pledging support for the people of
Boston who were suffering economic hardship because of Parliament's actions. When the
American Revolution began, Blair became deeply involved in the government of his state. He served as a member of the convention that drew up
Virginia's constitution (1776) and held a number of important committee positions, including a seat on the Committee of 28 that framed the
Virginia Declaration of Rights and plan of government. He served on the Privy Council, Governor Patrick Henry's major advisory group (1776–1778). The legislature elected him to a judgeship in the general court in 1778 and soon to the post of chief justice. He was also elected to Virginia's high court of chancery (1780). The judicial appointments automatically made Blair a member of Virginia's first court of appeals. On the Virginia Court of Appeals, Blair participated in
The Commonwealth of Virginia v. Caton et al. (1782), which set the precedent that courts can deem legislative acts unconstitutional. The decision was a precursor to the
United States Supreme Court in decision
Marbury v. Madison. In 1786, the legislature, recognizing Blair's prestige as a jurist, appointed him
Thomas Jefferson's successor on a committee revising the laws of Virginia. The following year, he was appointed as a delegate to the
Constitutional Convention. Blair served on the Supreme Court from February 2, 1790, until October 25, 1795. The court's caseload during Blair's tenure was light, with only 13 cases decided over six years. However, Blair participated in the court's landmark case of
Chisholm v. Georgia, which is considered the first United States Supreme Court case of significance and impact. == Freemasonry ==