Why is the focus almost entirely on not requiring identification for voting then, and not on making it easier to get an ID? It seems to me that, unless the point is to allow people to vote illegally, getting people an ID is a far more important issue since you need it for most important actions in your life (getting a job, getting married, etc.), and many unimportant actions too. How hard is it really to get an ID? From a European perspective this discussion makes no sense at all. If somebody proposed no longer requiring an ID to vote they'd be laughed out of the room, and if somebody proposed to set up a system to make it hard for a specific party's voters to get an ID there would be a huge outcry.
It's worth noting that another example specifically is legal in the US - you are legally allowed to gerrymander for political gain. Most people I talk to agree this is wrong too.
The reason it's mainly focused on voting is because the idea of voting as an enshrined right is very important, especially in the US. Everyone is meant to get a vote, and attempts to stop people from voting are seen as an attack on the core principles and foundations of the country.