The US plans to award Taiwan Semiconductor Manufacturing Co. $6.6 billion in grants and as much as $5 billion in loans to help the world’s top chipmaker build factories in Arizona, expanding President Joe Biden’s effort to boost domestic production of critical technology.Under the preliminary agreement announced by the US on Monday, TSMC will construct a third factory in Phoenix, adding to two facilities in the state that are expected to begin production in 2025 and 2028. In total, the package w...