A person born as an American citizen is factually an American citizen and must, legally, subscribe to its laws, so it would be a bit silly to ignore the fact entirely.
But no, I don’t agree with indoctrinating children into blind patriotism. The nation had some good hard logic that went into is foundation, which it’s good to understand, but again that’s just factual information which one is free to agree with or disagree with as suits their interests and personalities.
The 99% claim is based on research analyzing how often people change to a different belief system from the one they are brought up with. Unfortunately, Google books isn’t showing the text for me from my cite, so I’m not sure whether that’s a temporary issue or if they’ve taken it down. But here’s a quote, as preserved in an old thread:
Most of us stay the religion in which we were raised (Star and Finke 2000; Hadaway and Marler 1993). For instance, in the United States, more than 80 percent of us born Catholic stay Catholic, more than 90 percent of us born Protestant stay Protestant, and more than 90 percent of us born Jewish stay Jewish (Greelet 1991). And even if people do choose another religion, they can only choose a religion that crosses their path. They can only switch to a new religion that exists where and when they do and is introduced to them by someone–a friend or missionary–or something–a pamphlet or television show–that intersects with their limited existence. It simply cannot be escaped: time and place are the most unavoidable and salient determinants of religious identity.
[…]
As Argyle and Beit-Hallahmi (1975, 30) conclude, after reviewing extensive literature on the subject, “there can be no doubt that the attitudes of parents are among the most important factors in the formation of religious attitudes.” Potvin and Sloane (1985) found that teenagers whose parents are regular church attenders are five times more likely to be religiously active than teenagers whose parents are infrequent or non-church attenders. Stark and Bainbridge (1985) found a significant correlation parents’ beliefs in God and their children’s beliefs in God, succinctly concluding that “believers tend to have believers for parents; nonbelievers tend to have nonbelievers for parents” (1985, 330). As cited in the previous chapter, more than 80 percent of Americans born Catholic stay catholic, moer than 90 percent of Americans born Protestant stay Protestant, and more than 90 percent of Americans born Jewish stay Jewish (Greeley 1991)/ Cornwall (1988) and Storr (1988) looked at Mormon religiosity, finding parental influence on religious identity to be empirically significant, with Stott concluding that his data “clearly support the belief that parents play a dominant role in the religious socialization of their offspring” (1988, 261).
[…]
While the bulk of existing research does support the conclusion that parents clearly influence the religious beliefs and practices of their children, there is debate about the definite strength and actual time span of that influence (Kalish and Johnson 1972; Hoge, Petrillo, and Smith 1982; Bengston 1975; Dudley and Dudley 1986; Francis and Brown 1991). The fact is, of course, that it is not an absolute, air-tight causal relationship. Kids don’t always and in every instance automatically adopt the exact same religion as their parents. Far from it. Anthough changing religions is a rarity in the United States–Stark and Finke (2000, 115) estimate that fewer than 1 percent of Americans convert to a completely new religion–most of us certainly know some people who didn’t stick with their parents’ religion and grew up to choose different religious paths.
Consider my friend Doug, who wrote that piece of prayer for the introduction to this book. Doug wasn’t raised Mormon, but after his marriage to Michelle, he converted to the Church of Jesus Christ of Latter-day Saints. And what is interesting sociologically is that Doug’s process of religious conversion/change following his marriage to Michele is actually quite typical (Musick and Wilson 1995; Alba 1990; Hout and Greeley 1987; Bahr and Albrecht 1989; Hoge 1981). It fits one of the major patterns of religious switching: it is other people in our social world–usually those closest to us–who exert a strong influence over our religious choices/paths (Stark and Bainbridge 1985; Roberts and Davidson 1984; Richardson and Stewart 1977; Gaede 1976). As Stark and Finke (2000, 117) assert, “conversion is seldom about seeking or embracing an ideology; it is about bringing one’s religious identity into alignment with that of one’s friends and family members.”