I almost guarantee you all Wanx will not get their hands on A123's assets. If it was the case, their offer of 80% stake in the company would have gone through this past summer. A123 themselves have said the government approval process is too long and they would much prefer to sell their assets to JCI. Wanx even wanted to delay the auction so they can get governmental approval that they need.
In order for Wanx to buy A123's assets
1. They would need approval from Timmy Geithner, which Timmy will unlikely approve
2. Even if Timmy approves the deal, Obama can still veto the decision
3. Those who says it's up to the judge and "judicial oversight" is clueless. Obama has the power to veto when it comes to prohibiting a transaction to safeguard national security.
4. The fact that we are nearing the auction, and have not heard the status of CFIUS is not looking good for Wanx
Some of you are claiming that if U.S. government did block the deal, there will be serious political implications. That is laughable. Just to give you all an example, Ralls Corp a Chinese company recently wanted to buy a land near Oregon close to where U.S. Navy training facility in order to build a wind farm. CFIUS blocked the transaction, and the Chinese challenged CFIUS's decision. Obama then issued an executive order which shut down Ralls Corp's any hope of buying the land.