CFIUS Process All companies proposing to be involved in an acquisition by a foreign firm are supposed to voluntarily notify CFIUS, but CFIUS can review transactions that are not voluntarily submitted.
CFIUS' primary concern in most reviews is that technology or funds from an acquired U.S. business might be transferred to a sanctioned country as a result of being acquired by a foreign acquirer.[2]
CFIUS reviews begin with a 45-day decision to authorize a transaction or begin a statutory investigation. If the latter is chosen, the committee has another 45 days to decide whether to permit the acquisition or order divestment. Most transactions submitted to CFIUS are approved without the statutory investigation. However, in 2012 about 40% of the 114 cases submitted to CFIUS proceeded to investigation.
CFIUS provides close scrutiny to acquisitions of critical infrastructure, including public health or telecommunications, among others.
CFIUS has looked at the "restrictions on sale of advanced computers to any of a long list of foreign recipients, ranging from China to Iran." CFIUS reviews even deals with firms from U.S. allies, such as BAE Systems' early-2005 acquisition of United Defense. This and the vast majority of transactions submitted to CFIUS are approved without difficulty. But at least one deal has been called off when CFIUS began to take a closer look.
https://en.wikipedia.org/wiki/Committee_on_Foreign_Investment_in_the_United_States