Matthew Continetti of the Washington Free Beacon explains why last week’s congressional testimony from special counsel Robert Mueller did little to influence views about President Trump.

The real truth is Mueller’s testimony was never going to interrupt preexisting trends. Support for impeachment has been stable for a year at around 40 percent in the Fox News poll of registered voters. Fox asks, “Do you think President Trump should be impeached and removed from office, or not?” In June 2018, 39 percent of respondents answered yes. Last week, 42 percent said the same. Opposition to impeachment has hovered around 50 percent during all this time. When the most recent Fox News poll asked if Mueller’s testimony might cause voters to change how they felt about Trump, only 8 percent said there was a strong chance of that happening. Forty-nine percent said not at all.

Views of President Trump are cast iron. Mueller might have overturned this equilibrium by offering new evidence incriminating Trump or by saying definitively that Trump obstructed justice. He did neither. …

… But President Trump and Republicans would be wrong to assume that the Democrats’ drive to impeachment has ended. The will to overturn the 2016 election never depended on Mueller. He was merely the most likely instrument of Trump’s undoing. Democrats have called for impeachment since Trump’s inaugural. What they have lacked is the means.