It's not as difficult as you might imagine unfortunately, and you don't even have to engage in violent overthrow like the Soviet Union, nor political subterfuge, like Nazi Germany.
Monetary debasement is the foundation. Since the love of money is the root of all evil, you're going to need a lot of it to accomplish this, so the first step in building the gilded cage is convincing the politicians they need to get rid of real money and replace it with fiat currency in a Central Bank Ponzi scam. This way, you can become wealthy without working, simply by being in charge of the bank, and lending out little green lies instead of gold and silver...you're already holding all theirs as collateral, so you have all the genuine wealth, and whoever uses your counterfeit money is now legally trapped in endless debt there is never enough fiat currency to pay off.
Spending frenzies! Through bribery of public officials & lobbies, fabricate endless hobgoblins & guilt trips: scare and manipulate the government into continual wars, welfare and frivolous boondoggles. Thus you create sinecure for your relatives & friends, buy the arrest of your opponents and manipulate the propaganda non-industry into advocating even more spending, debt, borrowing, more spending...drip-drop. Rinse & repeat.
CULTural Engrainment over generations. By 1963, next to nobody in America gave a fuck about having been ass-raped economically in this manner on December 24th, 1913. The Roman CULT had a vise-tight grip on the ignorant and their willfully-ignorant political leaders not through threats of hellfire as in centuries before, but being the primary influence peddlers for BanKHAZAR (the Vatican itself had long ago Whored out to the Roth$child banKHAZAR$ in order to peddle the War Between The States in America to establish this control). Conservatism was waning, thanks to their berzerker mole, Joe MacCarthy, and in a couple more years, the Jesuit fags would roll out a communist version of their spiritualist authoritarianism, popularly known as "liberation theology". This would serve as the new phase for solidifying the gilded cage of American socialism.
Population debasement (aka SUBVERSION). Lie, lie and then lie some more: Convince the young that trash is art, up is down, right is wrong and wrong is "cool", thus a boy is a girl & debt is money. Push immorality in general, especially sexual immorality. After making the people lazy with welfare & stupid with degreed, "enlightened" deceit, destroy them with drugs and lust. Be sure to import as many third-worlders as possible also, and cater to whiners, women & weaklings as well. Replace the Word of God with the lies of Stalin, and quote the former, claiming it advocates the latter. In all this confusion, turn doctors into drug dealers: focus on treatment and therapy to make the sick comfortable in their disease instead of curing them. Also, insist they be made part of the bureaucracy through socialized medicine, so they are never held accountable for anything.
All you have to do is institutionalize corruption, and you will create a gilded cage of sloth and avarice from which the average kept citizen will never want to escape, much less revolt.