Donald Trump has stepped up his attacks on Barack Obama in the wake of the Orlando nightclub massacre, implying he supports Islamic extremism.
Mr Trump, who has been vocal in his conspiracy theory that the US president is a closet Muslim, repeated his call after the shootings on Sunday for Mr Obama to resign "in disgrace".
He also renewed calls for Muslims to be banned from entering the US, saying he would "suspend immigration from areas of the world where there is a proven history of terrorism" against the US or its allies. "He doesn't get it or he gets it better than anyone understands," he said yesterday. "Either way it's unacceptable."
Pressed on what he meant, the controversial Republican presumptive nominee said darkly that Mr Obama was "either not tough, not smart, or has something else in mind". "There is something going on," he added.
Mr Obama has risen above the fray, speaking of the attack as a terrorist atrocity and a "hate crime" and asking Americans to pray for the victims.
But Mr Trump's rival for the presidency, Hillary Clinton, said: "I'm fine with calling it radical jihadism or radical Islamism. What I am not OK with is the demonising of an entire religion."
Mrs Clinton again called for a debate on gun control, pointing out assault weapons, like the one used by Omar Mateen, were forbidden in the US for 10 years until the ban expired in 2004.
White House spokesman Josh Earnest said yesterday, once again, that the president was frustrated by the Republican-controlled Congress's continued blocking of gun law reform.
"There are certain common sense things that Congress could do that would make it harder for any individual to get their hands on a weapon of war," he said.