A lawsuit filed in federal court contends Arizona’s new law banning abortions after 20 weeks is unconstitutional because it violates a woman’s due process rights.

The three doctors contend that often women do not find out about prenatal problems until the 20th week of pregnancy. So, the timetable put in place by the new law interferes with health care decisions, the suit argues.

Arizona now permits abortions until viability of the fetus, generally considered to be 22 to 24 weeks.

Gov. Jan Brewer signed HB 2036 into law in April after the Legislature approved it. The law is scheduled to go into effect on Aug. 2 if the court does not issue an injunction.

At least six other states previously enacted similar bans.

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