By besmirching the integrity of government statistics, President Trump is endangering an underappreciated treasure, our columnist says.

The Trump administration is engaged in an increasingly wide-ranging campaign against data that contradicts its political agenda.

China demonstrates how manipulating economic data can ultimately erode government credibility.

President Trump promoted his own version of reality in the Oval Office after firing the head of the agency that collects employment statistics last week.

By besmirching the integrity of government statistics, President Trump is endangering an underappreciated treasure, our columnist says.