Not to minimize Texas -- it's a big state with significant black and Hispanic populations and political symbolism as a deep
blue red state with a governor prone to threatening secession -- but the game here is bigger than Texas. If DOJ can't prevail under Section 2 in Texas, then its power will be severely limited, and other (mostly southern states) are likely going to be beyond DOJ's reach -- unless they embark on new, deliberate discrimination schemes.
Which brings us to North Carolina, where the GOP takeover of the statehouse in November has resulted in a host of voting law changes that are adverse to minority voters, including its own voter ID law. A clash between the new GOP government in Raleigh, the scene of weekly protests for months, and the Obama Justice Department over voting laws would be a dramatic confrontation. That looks like where this is all headed.