The reshoring of American industries has become a strategic priority to enhance domestic manufacturing resilience, reduce supply chain dependencies, and drive economic growth. Advanced lean manufacturing principles, coupled with automation, present a transformative approach to achieving cost-effective and sustainable production. This research explores the integration of smart automation, robotics, and digital lean methodologies to improve efficiency, reduce waste, and optimize operations in reshoring initiatives. By leveraging Industry 4.0 technologies such as cyber-physical systems, artificial intelligence, and real-time data analytics, manufacturers can achieve higher productivity while maintaining flexibility and quality. The study aims to identify the key enablers, challenges, and impact of advanced lean automation on reshoring efforts. Additionally, it investigates how digital lean tools and automated systems contribute to competitiveness, workforce development, and supply chain resilience in the U.S. manufacturing sector.