Seven members of the Senate Intelligence Committee wrote to President Obama this week asking him to declassify and make public “additional information concerning the Russian government and the U.S. election” that committee members apparently have learned about in confidential briefings. The president should take their advice. Cynics might be tempted to view their letter — which was signed only by Democrats and an independent senator who caucuses with them — as a partisan ploy designed to buttress the argument that Donald Trump’s victory was rendered illegitimate by Russian meddling on his behalf. But seeking information about possible Russian meddling in the election shouldn’t be a partisan issue.