ISIS had absolutely nothing to do with the Orlando shooting at the Pulse club, except to be mentioned by a mentally deranged self-loathing gay man. He also mentioned allegiance to other groups who operate in opposition to ISIS, making his “allegiance” claims somewhat suspect.
The only way Trump could possibly have any effect on a shooting like this would be to find a way to keep guns out of the hands of mentally ill people. Sensible, thinking people know this. But then — those aren’t adjectives used to describe Trump supporters (gay or straight).