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.

Mitch McConnell is pushing back against President Trump’s most controversial nominees, becoming an unlikely — and sometimes lonely — face of Republican resistance.

President Trump added fuel to the fire in his feud with former Senate Republican Leader Mitch McConnell, claiming the longtime Kentucky senator lacked the mental sharpness to shepherd GOP members in the upper chamber.