After 93 years and a 25-hour filibuster, Washington finally has an income tax, and billionaires are already packing their bags

After a grueling 25 hours of debate on the House floor, complete with an almost show-stopping filibuster effort of more than 81 amendments by Republicans to stop the bill from moving forward, Washington made history this week with the passage of a millionaires tax bill, which would create the first income tax in the state’s history.

On March 9, lawmakers passed a 9.9% tax on personal income above $1 million per year—a first for the income-taxless state. The final vote was 52–46, and...