The court's decision came days after its watershed ruling that penalising abortion is unconstitutional, a major victory for reproductive rights activists.
The bill was already approved by Argentina’s Chamber of Deputies and has the support of President Alberto Fernandez, meaning the Senate vote was its final hurdle.
Tens of thousands of protesters in Poland, mainly women, have taken to the streets against a ruling that limits abortion.
Chief justice Julia Przylebska said in a ruling that existing legislation which allows for the abortion of malformed foetuses was "incompatible" with the constitution.
The protest comes as a battle continues to legalize abortions in Argentina, where terminations are currently only permitted in cases of rape, or if the mother's health is at risk.
Missouri's restrictive abortion ban does not include exceptions for pregnancies caused by rape or incest.
The bill to ban nearly all abortions with an only exception to protect the mother's health will take effect in six months if it becomes law. Under the ban, doctors who perform abortions could serve more prison time than rapists.
Southeastern Georgia state joins a string of other GOP-controlled states moving to enact strict ban on abortion if a fetal heartbeat is detected.
Had the proposed measure been passed, it would have legalised a woman's right to seek an abortion in the 14th week of her pregnancy. The bill had narrowly passed in the lower house in July.
The lower house of the country's Congress has voted to allow abortion in the first 14 weeks of pregnancy. President Macri has said if the Senate approves the bill, he will also sign it.
A close vote is likely on Thursday and if it passes, the measure would go to the Senate. President Mauricio Macri says he opposes abortion, but would not veto the bill.
If passed, the bill would then go before the Senate, where it faces an uphill battle to become law. The new bill would decriminalise abortion during the first 14 weeks of pregnancy, and even afterwards conditionally.
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