(snip) Some liberals contend that Roberts’s surprise crossover on the health care law has given him a free hand to craft and sign onto a slew of conservative opinions next year without suffering much of a public drubbing from Democrats and the press. With one major case, Roberts may have inoculated himself and the court against charges of partisanship. The chief will have plenty of chances to make his mark in the next term. Already, the justices are planning to delve into the politically charged issue of affirmative action. They may well add hot-button disputes over same-sex marriage rights and...