I'm not sure that's official Catholic doctrine[1] but in any event compared to many other religions, and many strains of Christianity (think early Gnostic sects) it's all splitting hairs. People quibble endlessly over how and why good works and labor are important--do they reflect salvation or further salvation?--but I don't think those theological distinctions have substantively effected our political culture. Such minor distinctions are exaggerated by denominations precisely because of their larger shared characteristics that require them to work hard at differentiating themselves. Most of these nuances lose their importance when, e.g., comparing Christianity to Islam, Buddhism, or Hinduism.
[1] AFAIU official Roman Catholic doctrine, as well as most Protestant faiths, is that salvation only comes from the grace of God; and that the only sure-fire way of receiving that grace is wholehearted belief in Jesus Christ as the son of God who died for the remission of sin. But that just begs the question of what "belief" means, thus the centuries of dispute subsequent to the domination of Trinitarianism.
[1] AFAIU official Roman Catholic doctrine, as well as most Protestant faiths, is that salvation only comes from the grace of God; and that the only sure-fire way of receiving that grace is wholehearted belief in Jesus Christ as the son of God who died for the remission of sin. But that just begs the question of what "belief" means, thus the centuries of dispute subsequent to the domination of Trinitarianism.