An Italian entrepreneur starting a startup in the US would need to consider several legal issues. The US startup process is more informal than in Italy, with no requirements for statutory auditors or minimum capital. The entrepreneur would need to choose an entity structure like a corporation or LLC and determine where to incorporate. Management and financing structures would also need to be established, including potential sources like friends/family, angels investors, venture capital, or strategic partners. Overall, thorough preparation and understanding of US laws around taxation, employment, and immigration is crucial for a successful startup in the US.