“What happened was that the gain was up pretty high to pick up Trumps voice due to the distance of his mouth from the microphone due to his height. “
Agree. Fail on sound tech’s part, he should have adjusted the mic for his height.
And they both had on wireless lavs, mix tech could have mixed in a little lav (but not too much because of phase problems between lectern mic and lav).
And if it were only an issue of too much gain, that should have taken the sound guy about 2-seconds to correct.