One of the most significant deals that Colombo was involved in was the infiltration of labor unions, particularly in the construction industry. By controlling key unions and their members, he was able to exert considerable influence over lucrative construction projects in New York City. Colombo’s strategic partnerships and ruthless tactics allowed him to amass wealth and power, making him a formidable figure in organized crime. Additionally, his leadership style and ability to negotiate effectively with other crime families solidified his reputation as a savvy and respected mafia boss.