There was once a political joke in the United States: How to make a smartly dressed Senator fly into a rage? The answer is: Let the Chinese buy up an American company!
Nowadays, there is a “ready version” for the joke: At a hearing on US-China economic ties held by the US Senate Financial Committee, the politicians were unable to contain their anger when they heard the news that the China National Offshore Oil Corporation (CNOOC) was going to buy up the US Unocal Corp., demanding the government to stop the deal. Originally it is a normal business act beneficial to both the buyer and seller, these American politicians saw from there the “threat to US national security”.