I have to question the term "devout." Just as there are secular Jews, there are cultural Catholics. The distinction is made between practicing Catholics and cultural Catholics, and like Schwarzenegger, Pelosi, and Kerry, he is not a practicing Catholic.
From Catholic.org:
Unfortunately, the term practicing Catholic is bit squishy (or vague or ambiguous as lawyers might say) and subject to abuse by all manner of Catholics (in name only) who seek to justify their various stances
The person who claims to be a practicing Catholic while not giving at least religious submission of intellect and will to the all Church's teaching, including that related to the ordination of women, artificial contraception, abortion, and homosexuality (to pick a few of the hot-button issues) is being disingenuous. These moral teachings are part of the "standards of excellence" that are part of the Catholic practice. Without at least religious submission of intellect and will to these and similar teachings, one can be many things, but one thing one cannot be is a practicing Catholic.
What Does it Really Mean to be a Practicing Catholic? - Living Faith - Home & Family - News - Catholic Online