(CNN) -- That didn't take long. Just two weeks since the Supreme Court struck down Section 4 of the Voting Rights Act, state legislatures are moving quickly on voter suppression measures. Already, six of the nine states that were previously covered by the requirement that changes in voting procedures be pre-cleared have started to bring up restrictive voter ID laws. If there is a glimmer of hope for voting rights advocates, however, it's that the court merely ruled that the formula was outdated, and that Congress "may draft another formula based on current conditions." I agree with the court that indeed, the previous formula included in the Voting Rights Act does not address today's attempts to restrict the right to vote. In fact, I think it underestimates them.
@highlight
Mark Pocan: States are moving on voter suppression measures after Voting Rights Act ruling
@highlight
Pocan: A "Right to Vote" amendment would guarantee voting for all Americans
@highlight
Despite popular belief, he says, Constitution does not guarantee right to vote
@highlight
Pocan: Voter fraud nonexistent; states would have to prove a reason to restrict rights
And there is no way that we can better protect that right than through a right to vote amendment to our @placeholder.