Sen. Mitch McConnell was a generational force for the Republican Party — using procedural tactics and political will to stymie much of former President Barack Obama’s agenda, hand President Donald Trump key first-term political victories and deliver a 6-3 conservative Supreme Court majority.

Sen. Mitch McConnell (R-KY) spent 18 years as Senate Republican leader corralling his members to fall in line. Now, unshackled from those responsibilities and likely headed for the chamber’s exit doors,