President Biden's top national security and economic advisers are trying to address a critical supply crunch that is slowing U.S. automobile manufacturing and threatens other sectors, including national security, according to experts. National security adviser Jake Sullivan, National Economic Council director Brian Deese, and Commerce Secretary Gina Raimodo will meet with executives from 19 companies to discuss growing shortage of semiconductors, a key component of many computerized electronics. The shortage touches nearly every industry, but U.S. auto makers have been especially hit hard. General Motors, Ford and Stellantis (formed by a merger involving Fiat Chrysler) have all temporarily closed down...