WASHINGTON — America’s economy would be spurred by boosting the number of high-skilled immigrants tin the country, the author of a new book on income inequality said Tuesday.

Edward Conard, author of “The Upside of Inequality: How Good Intentions Undermine the Middle Class,” told an audience at the conservative American Enterprise Institute that high-skilled workers are moving to California. while America’s low-skills jobs are moving overseas.

“Seventy percent of assets belong to people who started their own business,” Conrad said. “What we’re seeing today is a shortage of supervision because of the brain drain.”

He advocated recruiting science, technology and engineering workers from other countries to work with U.S. business owners so they can learn from each other.