Gov. George W. Romney's November 18 announcement that he was a candidate for the Presidency of the United States and his campaign for the 1968 Republican Presidential nomination;
The Michigan Legislature's enacting a state income tax in July, taxing personal income at 2.6% and corporate income at 9.6%;
Teachers strikes in Detroit and elsewhere that closed schools in September and part of October for more than half a million students;
The Coho salmon boom after the species was introduced to the state's waters, drawing large crowds to the state's resort areas in the fall, and a September storm that killed seven fishermen near Frankfort;
Problems in the automobile industry, including lower sales, price increases, safety issues, a two-month strike at Ford Motor Co., local strikes that halted production by Chrysler, and negotiation of new contracts with the United Auto Workers (UAW) that provided for $4.70 per hour wage increases and $1.00 per hour benefits increases over three years;
A Teamsters strike resulting in violence, including one death in Michigan, against truckers refusing to honor the strike;
The selection of Joe Schmidt as the Detroit Lions' head coach (UPI-2), and his signing a five-year contract to serve in that position (AP-3);
The collapse of the 1967 Michigan State Spartans football team, compiling a 3–7 record after two consecutive years contending for the national championship (AP-2, UPI-6);
The selection of Dave Bing as the NBA Rookie of the Year (AP-8, UPI-4);