Examples of this include Henry Clay's American System (economic system), Japan's use of MITI to "pick winners and losers", Malaysia's imposition of currency controls in the wake of the 1997 currency crisis, China's controlled exchange of the yuan, Argentina's economic policy of tariffs and devaluation in the wake of the 2001 financial crisis and the United States' use of tariffs to protect domestic steel production.
Instances became more visible from 2005 after several governments intervened to prevent takeovers of domestic firms by foreign companies. Some cases include:

The reason for a policy of economic protectionism in the cases above varied from bid to bid, In the case of Mittal's bid for Arcelor, the primary concerns involved job security for the Arcelor employees based in France and Luxembourg. The cases of French Suez and Spanish Endesa involved the desire for respective European governments to create a 'national champion' capable of competing at both a European and global level. Both the French and US government used national security as the reason for opposing takeovers of Danone, Unocal and the bid by DP World for 6 US ports. It should be noted that in none of the examples given above was the original bid deemed to be against the interests of competition. In many cases the shareholders supported the foreign bid. For instance in France after the bid for Suez by Enel was counteracted by the French public energy and gas company Gaz De France the shareholders of Suez complained and the unions of Gaz De France were in an uproar because of the privatization of their jobs.
In the United States, an example of economic patriotism would be the numerous bumper stickers: "Be American, Buy American".
However, in most cases where no cartel is formed, the market forces will create competition for local products, and cause prices to drop.Because locally-produced goods can attract a premium if consumers show a preference towards it, a firm has an incentive to pass foreign goods off as local goods if foreign goods have cheaper costs of production than local goods. They are able to do this because the line between foreign-made and locally-made is blurry. This brings up the issue of the definition of local goods. For example, while a particular car may be assembled in America its engine may be made in another country, say, China. Furthermore, while the engine may be made in China, the engine's components may be made in several other countries, e.g. the pistons may come from Germany and the spark plugs may come from Mexico. The components that make up the spark plugs and pistons may come from different countries and so on.