For example, Puerto Rico is subject to the Jones Act, which requires using very costly US-built ships and crews for all sea transport to and from the mainland. The island must also comply with the federally mandated minimum wage, despite an income level about half that of the poorest US state.
但这样的安排也有缺点。例如波多黎各是受《琼斯法案》管辖的，所有在本岛与美国大陆之间的海运都必须使用美制船只和美国船员，成本高昂。此外尽管收入水平只是美国最贫穷州的大概一半，岛上还是必须遵守联邦法律规定的最低工资。同时这类自由邦不能享受美国破产法第9章所载明的权益。