From trying to make revenue by creating "premium security" (see also pre-check, are you kidding me with this?), to reducing their workforce after already hiring the most apathetic, underpaid, and undereducated people I've encountered running security for airports.
Flying to Japan several times this year via LAX, airports in the US are not only some of the worst run (security-wise), but also the most unwelcoming anywhere I've been.
Last time I arrived back into the States, the immigration officers checking passports were full on wearing bullet proof vests. What is that about? What kind of way is that to welcome anyone into the country?