Catherine Rampell: The Trump administration’s census question degrades our data. And our democracy.

Washington • It’s not enough that President Trump and his advisers have been arguing for years that official government data is bad, untrustworthy, phony, manipulated for political gain. Now they are working to lend credence to these smears and conspiracy theories — by making them true.Unless, that is, the Supreme Court intervenes.During the Obama administration, Trump repeatedly claimed that official numbers released by our independent federal statistical agencies — such