WASHINGTON — Major cases await the justices of the U.S. Supreme Court when they return to the bench in January, including a test of how states purge their databases of unqualified voters and a challenge likely to deal a serious blow to the nation's public sector unions.Source: Major cases on voter purging, union power await Supreme Court in 2018...

Since the Supreme Court’s 2010 decision in Citizens United v. Federal Election Commission, proponents of stricter campaign finance regulation have increasingly prescribed “disclosure” as an antidote to “dark money” in politics.Source: Staring at the Sun: An Inquiry into Compulsory Campaign Finance Donor Disclosure Laws...