Two events occured in close proximity, shattering the newfound Sabbat strength. The first was the onset of the second Sabbat Civil War and the second was the arrival of Huey Long to the Louisiana political landscape. The civil war didn't effect New Orleans much but it was enough of a distraction that the resurgence of Populism in the years after the Great War went unnoticed or ignored in favor of Sabbat political wrangling. This was just what the Brujah needed to make a bid for control. By backing the Long political machine, they were able to wrench power away from the Lasombra controlled factions for almost four decades, during which a bitter war developed as the subtle games of influence were set aside for direct attempts at assassination and murder.
The signing of the Code of Milan removed the only other thing vying for Vicario's attention. Unfortunately, despite Huey Long's assassination in 1835 after ordering state troops into New Orleans to fix an election for one of his allies, the damage was already done. While the Serpents tried to undermine the Long faction through corruption, the Lasombra fought it head on by supporting Anti-Long factions and radical conservative groups, a task which was made more difficult by the onset of the Depression. Meanwhile, Baton Rouge was reaping the benefits of the oil boom as well and Orlando's base of operations began to grow rapidly, allowing him to bring more kindred into the city to assist him in his plans.
Things changed rather quickly, however, after the end of World War II. A backlash of conservatism and a removal of the arbitrary state controls on the city began to support the Lasombra efforts while Callough grew increasingly frustrated with the orders and demands of his sire in Baton Rouge. Finally, he declared himself and his brood antitribu. Rather than settle affairs in New Orleans, things only worsened with the almost immediate onset of the third Sabbat Civil War in 1957. Subtle political games swiftly became outright warfare overnight after Callough and his new pack stormed the haven of Vicario and diablerized the Archbishop. Chaos ensued.
Control of the city briefly passed to the Brujah while Paul Delacroix, the only remaining Lasombra of Vicario's line in the city, sought to gather the other Sabbat leaders and establish himself as his sire's successor. His relative youth, however, forced him to concede partial control to Legba and Baron Samedi in exchange for their assistance. The triumvirate of bishops, with the blessing of Malena and the Cardinal, soon gathered their forces and threw themselves against the Brujah. Murder mistaken as racial violence mingled with the turmoil brought on by integration and the civil rights movement. In the turmoil, the Long political machine collapsed. Callough soon followed, destroyed by Serpent corruption and the betrayel of one of his childer.
With the loss of their sire, the remaining Brujah were given the choice to swear loyalty to the bishops or flee the city. Three decided against the latter choice merely because their sire's declaration had made it almost impossible for them to return to the Camarilla (or, at the very least, Baton Rouge) and so swore their oaths. In the ensuing years, they have comprised the core of the Loyalist sect within the city, making many regret that they weren't given less options.
With the 70s came extraordinary growth and prosperity with the tapping of the region's full oil potential. The Sabbat leaders took full advantage, settling in and sinking their barbs deeper into the local political scene, taking up the slack where the Long legacy had left off. Unfortunately, national attention was soon brought to bear on the local corruption during a series of scandals and trials of public officials during the 80s and 90s, as well as an alarmingly high crime rate. Much of this threatens the Sabbat power base, particularly that of the Serpents, and the Camarilla thus does all it can to back the investigations. Things have settled down a bit with the turn of the millenium, with both of the major cities of Louisiana eyeing the other and gathering their strength for another confrontation.