Gerrymandering undermines our voting power. I do want states to have as much independence and power as possible, but moving around district lines is one of those issues where both the state and the federal government need to work together.
The federal government should also step in when competing parties, not part of the two currently in power, are not allowed to hold primaries or register themselves as libertarians.
This is currently occurring in Indiana, and it is meant to undermine my Libertarian Party of Indiana.
Basically, anything which is done to suppress out voting power needs to be made illegal and enforced by the federal government.