...Insourcing is what happens when foreign-headquartered multinationals operate subsidiaries in the U.S. These companies contribute both to U.S. economic growth and living standards.... Insourcing provided jobs for more than 5.4 million U.S. workers in 2002, or nearly 5% of total private-sector employment. These are good-paying jobs, too. Payroll came to more than $307 billion -- or 6% of all private-sector compensation. The average annual compensation at such companies was a tad over $56,000, or some 31% more than the average annual private U.S. compensation. The internal operations of insourcing companies also contribute to research and development and to capital investment......