What is wrong with Wisconsin's Voter ID Law?

The left is fighting it tooth and nail and now the word is that Eric Holder the US Attorney General is going to fight it as well.

I have heard all the talk about it being unfair to people.  How is it unfair?

You go in to vote and show an ID to prove that you are who you say you are?  What is so unfair about it?  Have to show an ID when buying alcohol, have to show an ID at the bank, have to show an ID to get back in the Country, have to have an ID to drive a vehicle, many kids have to have an ID at school to get lunches, is all of that unfair?

They claim that it is an attempt by the right to cut back on votes for the left.  WTF?!  How can that be?  They even put in provisions to make it easier to get an ID.

People will be afraid to go to the polls.  Again, WTF?!  Why would they be afraid?  The only people afraid would be if you have a warrant out for you or if you are illegally in the Country or if you are not who you say you are.  Those are all legitimate reasons to be afraid and are also the exact same reason that voter ID is important.

Please someone tell me how VOTER ID is BAD!!!