Not fulfilling your legal tax responsibility is a crime. The IRS has not acted. Reid alluded that this was the case....but Romney has answered as he should...put up or shut up.
surely you don't understand the issue and many don't so you are in good company...
4000 elite wealthy Americans stuffed their money in private overseas bank accounts (swiss) to avoid US taxes on it.....one of those banks in Switzerland in 2009 was forced by the usa gvt to give up the names of those 4000 americans with money in them.
The IRS has no inkling on the money put in these foreign countries, (switzerland, cayman islands, bermuda) and the Americans putting their money in them DID NOT EVER CLAIM them on their tax returns....so the irs would never know....
But in switzerland, a bank there was forced somehow to release the names of Americans to the us gvt/irs....
The IRS, instead of sending these 4000 Americans avoiding taxes to prison, offered a one time Amnesty program to the 4000 people that had been illegally avoiding taxes there if they fessed up and paid taxes and penalty for the years of tax avoidance I believe....or get hit so hard on taxes and penalties or jail time that it wouldn't be worth it to continue to try to deny or hide it....the 4000 who were avoiding taxes in this one Swiss bank, had no choice but to accept the amnesty program issued in 2010....and articles on it said that these wealthiest American's tax lawyers and accountants were all scrambling to take the amnesty.
So basically, the IRS does not know about most of the overseas tax haven accounts held by Americans is because the whole point of having them in these countries is that these countries have no agreement with the usa gvt to report such to the us gvt....thus these people never reported to the irs as even having these accts....except the case with this one Swiss Bank that somehow got cornered in to revealing the Americans(that's a whole nuther story)...
Many believe for many reasons, that Romney was one of those Americans cornered in to Amnesty in 2010.