evidence: Texas Attorney General Ken Paxton and Wisconsin Attorney General Brad Schimel today led a 20-state coalition lawsuit against the federal government, challenging the constitutionality of the Affordable Care Act, commonly known as Obamacare. In the lawsuit, Attorney General Paxton explains that when Congress enacted President Trump’s tax overhaul, it rendered all of Obamacare unconstitutional by doing away with the tax penalty in Obamacare’s individual mandate. [...] In its current unlawful form, Obamacare still imposes rising costs and transfers an enormous amount of regulatory power to the federal government. In Texas and 38 other states, where the federal government administers health exchanges, health insurance premiums rose an average of 105 percent from 2013 to 2017. Around 70 percent of U.S. counties present citizens with a noncompetitive situation, having only one or two health insurers. "Through our multi-state lawsuit, we hope to effectively repeal Obamacare, which will then give President Trump and Congress an opportunity to replace that failed experiment with a plan that ensures Texans and all Americans have better choices for health coverage at more affordable prices," Attorney General Paxton said.