President Donald Trump and former John McCain presidential running ... says a Capitol Hill source with knowledge of funeral plans for McCain, who died of brain cancer Saturday at age 81.

Credit: mashable composite: NBC NewsWire/getty images and SAUL LOEB/getty images Senator John McCain has made it very clear that when he dies, Donald Trump isn't invited to his funeral.

The American flag is flying at half-staff at the White House as funeral plans are underway for Sen. John McCain, who died of brain cancer at age 81 on Saturday. Sen. McCain “will be laid to rest ...