to Mitsubishi Heavy Industries, and would handle up to 45 percent of the development work as a joint principal contractor. On the American side, senior officials in the U.S. State Department and Defense Department supported the project as a means for the U.S. to access Japanese technology and as a means of strengthening U.S.–Japan relations, but the Commerce Department and many members of Congress opposed the project due to the risk of strengthening Japan's ability to compete with U.S. aerospace firms. Opponents in Congress argued that Japan should acquire American aircraft in order to offset the trade deficit between the two countries. More than twenty members of the Senate demanded official review of the deal. After George H. W. Bush took office as president of the United States in January 1989, the U.S. government responded to domestic criticism of the deal by seeking "clarification" of the terms of the MOU, which the Japanese government viewed as an attempt to re-negotiate it. The Bush administration was particularly concerned with the risks of transferring technology to Japan. Bush announced a revised agreement in April 1989, shortly before the resignation of his Japanese counterpart Noboru Takeshita, under which Japanese access to flight control and weapons control software was limited, while the U.S. was to have access to any new technology that Japan developed for the project. American contractors were guaranteed at least 40% of the production for the program. Congress ratified the deal in June 1989 while expressing official displeasure with it. Japanese lawmaker Shintaro Ishihara was a vocal critic of the final deal, writing in 1990 that "our Foreign Ministry and other Government agencies decided it was better to eat humble pie than incur Uncle Sam's wrath on yet another bilateral issue," and pointing out that "we give away our most advanced defense technology to the United States but pay licensing and patent fees for each piece of technology we use." Production Work started in the FS-X program, initially given the company designation Mitsubishi SX-3. In 1984 General Dynamics had offered an enlarged version of the F-16 to the US Air Force and considered entering it as a low cost alternative in the Advanced Tactical Fighter competition. Neither came to fruition, however this concept became the starting point for F-2 development. The F-2 used the wing design of the F-16 Agile Falcon, but much of the electronics were further updated to 1990s