It is OK to show bias. You show yours by only addressing the drugs. But the facts are, whether stated or implicit, that the wall is intended to stop/minimize illegal crossings by ‘aliens’ into the ‘States.

Of course, the fun isn’t in the genetics so much as it is in following the pedigree trail and learning about all those people in your family history. As an amateur historian, I find that it lends a nice personal perspective to the larger historical contexts. But researching a pedigree takes a lot of time and patience.