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.

It seems President Donald Trump is unaware of a key fact about Republican linchpin Mitch McConnell. The Kentucky senator survived polio after contracting the disease at age 2 and credits vaccines with saving his life.