Basically, it's codified in Hart–Scott–Rodino [0] [0] https://en.wikipedia.org/wiki/Hart%E2%80%93Scott%E2%80%93Rodino_Antitrust_Improvements_Act https://en.wik

Basically, it's codified in Hart–Scott–Rodino [0] [0] https://en.wikipedia.org/wiki/Hart%E2%80%93Scott%E2%80%93Rodino_Antitrust_Improvements_Act https://en.wikipedia.org/wiki/Hart%E2%80%93Scott%E2%80%93Rod...