>The average US border official is just like the average official(and non-official) anywhere;

False. CBP is well known as bottom rung in terms of hiring of federal LEO and an employer of last resorts. For example, one of the most prestigious is the Marshals Service, and for instance HSI is typically far closer to "average" or above than CBP is. If you're dealing with something like a DEA or FBI agent that is roughly 'average' and CBP you are roughly dealing with the 'moron' end and roughly the professional and intelligence opposite of the Marshals.