Question about the Bishop's statement on communion

The Bishop's statement is at http://www.usccb.org/dpp/Eucharist.pdf. I am confused by it. If a person persistently refuses to accept the Bishop's position on birth control (even without engaging in birth control), are the Bishops saying that the person should not receive communion? The statement refers to "issues" that are not accepted. Is one issue enough? E.g., abortion. If not, would a failure to agree on birth control plus homosexuality mean that a person should abstain from communion? Suppose the person accepts the position on abortion, but believes in an exception for rape? The statement, to me, reads as setting quite high standards of belief and acceptance. Am I wrong? How significant is the footnote on Canon Law?