The Committee on Foreign Investment in the United States is probing a secretive company that has been buying up land around a key Air Force base in California . Flannery Associates a limited liability company registered in Delaware whose owners are publicly unknown . Several California congressmen have raised concerns about the hundreds of millions of dollars worth of land bought up in recent years in Solano County California . A Treasury Department spokesperson said CFIUS is committed to taking all necessary actions within its authority to safeguard US national security . The question will become if the investigation determines that the purchasers are a national security risk does the Treasury have the authority to unwind and at what cost so that is an open question Garamendi said . A statement from Travis Air Force Base provided to said We can confirm that base senior officials are aware of this land acquisition and are actively supporting all involved federal and Solano county agencies but said it could not comment further . In the most extreme cases following an investigation CFIU can recommend that the president move to block or unwind a transaction . It is not clear whether the Treasury Department has taken that step . The company could subpoena the company for more information on the nationalities of its investors . It also denied that Flannerys purchases were motivated by the purchase was motivated by its purchases were driven by the proximity to Travis AirForce Base . A lawsuit filed in May . The land purchases have been made by Flannery. It is also alleged that the land purchases are motivated by a lack of money. It also denies that Flannersys purchases are related to the company. It has also denied the purchases were intended to be motivated by their purchases. The company. The companies have bought the land. The land. It said they were making the purchases. It