The Supreme Court is only deciding whether to put on hold the Texas ruling revoking access to mifepristone. At the moment, it is not debating the case itself. That is currently being decided on by the 5th Circuit court, although it eventually could make its way to America's top court, too.
Earlier this week, the Alliance Defending Freedom, a conservative Christian legal advocacy group that filed the initial lawsuit against the FDA, submitted a brief to the Supreme Court asking it to let the restrictions on mifepristone go into effect.
Their request has been supported by 147 Republican lawmakers, who submitted their own brief to the court, calling the removal of conditions on access to the drug "a dangerous game with the health and safety of women and girls."