So if I am using the wrong fonts or something on my CV, that doesn't seem like a major reason for rejection.
The issue isn't fonts, Ajarn. Are you framing your research and teaching experience in ways that make you competitive in the US market and will make you stand out among 100+ applicants? We've shortlisted candidates with degrees and experience outside the US who do, but many do not. HR is usually not the best place to ask for feedback on application materials. That would be someone who has been involved with a search, whether an SCC or a SC member.