Has the nation lived down its history of racism and should the law become colorblind?

Addressing two pivotal legal issues, one on affirmative action and a second on voting rights, a divided Supreme Court is poised to answer those questions.

In one case, the issue is whether race preferences in university admissions undermine equal opportunity more than they promote the benefits of racial diversity. Just this past week, justices signaled their interest in scrutinizing affirmative action very intensely, expanding their review as well to a Michigan law passed by voters that bars "preferential treatment" to students based on race. Separately in a second case, the court must decide whether race relations - in the South, particularly - have improved to the point that federal laws protecting minority voting rights are no longer warranted.

The questions are apt as the United States closes in on a demographic tipping point, when nonwhites will become a majority of the nation's population for the first time. That dramatic shift is expected to be reached within the next generation, and how the Supreme Court rules could go a long way in determining what civil rights and equality mean in an America long divided by race.

The court's five conservative justices seem ready to declare a new post-racial moment, pointing to increased levels of voter registration and turnout among blacks to show that the South has changed. Lower federal courts just in the past year had seen things differently, blunting voter ID laws and other election restrictions passed by GOP-controlled legislatures in South Carolina, Texas and Florida, which they saw as discriminatory.