User blog comment:Evans0305/More BioShock Infinite screenshots/@comment-98.112.37.114-20100912032245/@comment-2250991-20100912042013

It's probably the handlebar mustache. Around that time, a lot of guys had it, especially the U.S. presidents. It was a manly sort of thing to have thick facial hair, and grooming it makes them seemed dignified. As for the hairstyle, it was just a well-groomed style then.