NEW ORLEANS - Following oral arguments in an appeal challenging the Patient Protection and Affordable Care Act (PPACA), the federal government on April 5 filed a letter at the request of the Fifth Circuit U.S. Court of Appeals to provide the U.S. Department of Justice's views regarding judicial review of the constitutionality of acts of Congress; the plaintiffs filed a response to the letter on April 9 (Physician Hospitals of America, et al. v. Kathleen Sebelius, No. 11-40631, 5th Cir.). See related, 2011 U.S. Dist. LEXIS 35491.