
The Republic was harnessed as an income source for the FEZ, allowing House to steadily expand his influence and power base. As such, he began working towards securing the FEZ's independence.

He knew that President Aaron Kimball would gladly trade the blood of hundreds of Republican troops for Hoover Dam. House was aware that the NCR only negotiated to avoid a protracted war for New Vegas, which would leave them vulnerable to the Caesar's Legion. The resulting New Vegas Treaty normalized relations between the Republic and the FEZ, securing an influx of money and tourists to the city, NCR protection, but without formal annexation. The combined forces of Securitrons and tribals resulted in them bargaining with House, rather than conquering the city outright.

When the Republic's military arrived, it found a considerable presence in the city of Vegas and Hoover Dam.

The Great Khans were particularly hard-hit, forced to settle at Bitter Springs and abandon all claim to the northern Mojave. The future Kings claimed what became Freeside, establishing a semblance of social order there. With House's aid, these three tribes drove the others out of the Strip and into the surrounding areas. Most tribes turned down the offer, but three (the future Chairmen, Omertas, and White Glove Society) did. He extended an offer of employment to the tribes inhabiting the city: in return for his considerable resources and access to medical facilities, food, water, clothing, and other high value goods, they would work for him, restoring the city, running its services, and defending it, if need be. The foundation of the Free Economic Zone was laid in 2274, when after detecting NCR advance parties at Hoover Dam, House emerged from hiding and began restoring the city in order to meet the Republic as a host and a bargaining partner.
