While Iran may not have been behind Saturday's assassination attempt, its dangerous regime should be on Washington's radar with respect to potential future plots. Not only was there credible intelligence on threats to Trump's life, but former Trump foreign policy advisors Mike Pompeo and John Bolton have been given 24/7 security due to threats from Tehran.
Even though Washington itself admits Iran wasn't behind the assassination attempt, the US government is still taking advantage of the event to try and smear Tehran. Despite the Iranian government having watched one of its generals be murdered by the US, it has merely called for legal punishment of American crimes, not assassinations.
The recent assassination attempt was due solely to the Secret Service's abject failures on the ground. The questions that now need answering are why the agency didn't initially secure the rooftop from which the shots were fired, how an armed 20-year-old was able to sneak onto that roof, and why they didn't respond to reports of an armed man on the roof minutes before shots were fired. The US security apparatus would be better served by answering these questions rather than pointing to nebulous plots by foreign actors.