That's irrelevant to the discussion. The point is it makes no difference who is in the Oval Office when it comes to aggression against the rest of the world and taking things too far to the point of starting a global armed conflict.

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If you are looking for source for something like this, you won't find any in the next 30 to 50 years until they declassify it. The US regime had to issue a "choke act" at the time and increase the classified level of the casualty report to highest level.

If they hadn't classified the hell out of it, the first thing that would have happened was those against the party in office would have used it as a weakness to attack the incumbent administration to the point that Trump would have had no choice but to show some response. That would have meant only one thing: escalation. Because next time instead of hitting 2 military bases with a dozen missiles Iran would have instantly launched 3000+ missiles hitting every US military base across the region and most probably the US navy as well. They would have never been capable of covering up that kind of casualties then.

That's an escalation ladder US regime neither wants to nor is capable of climbing.

Not to mention that the first consequence of that would have been global economic collapse as a big chunk of energy market would have evaporated in a blinking of an eye. Not only that would have evaporated Trump's hope for re-election back in 2020 but he would have gotten impeached and kicked out of office for breaking the constitution and declaring war without congress's permission and getting most of US central command wiped out in a matter of days.

Of course there are evidence as open source intelligence we can find that proves there were casualties, eg. eye witness reports of medivacs to hospitals in occupied Palestine and elsewhere or the interviews in US media with US servicemembers who deny the casualties but sometimes tell us the targets that were hit like the drone cockpit in al-Assad airbase (with the pilots inside) that turned into a gaping hole after it was hit with a BM with pinpoint precision or the fist target that was hit which was the command and control tower of the base which is where the commanding officer, dozens of communication officers and ranks are located and were evaporated!