New restrictions on access to a drug used in the most common form of abortion would be imposed under a federal appeals court ruling. But those restrictions won’t take effect, at least right away, because the Supreme Court previously intervened to keep the drug available during the legal fight. Wednesday’s ruling from an appeals court panel overturned part of a lower court order that would have revoked the Food and Drug Administration’s approval of mifepristone. But it left intact parts of the ruling that would end the availability of the drug by mail, allow it to be used through only the seventh week of pregnancy rather than the 10th, and require that a doctor be present when it's administered.