In his haphazard approach to governance, President Donald Trump has one overriding goal: to erase as much of the legacy of his predecessor, Barack Obama, as possible. His latest effort at Obama deconstruction is the revocation of a January 2015 executive order Obama signed that prevented federal spending on infrastructure projects like schools and highways that could be imperiled by rising sea levels. The Obama rule required federal agencies to factor scientific projections for rising waters into their plans, both to safeguard taxpayer funds and to prevent the loss of life in storms and floods. According to the Pew Charitable Trusts, flooding is already America’s most common and costliest natural disaster; from 1980 to 2013, floods caused more than $260 billion in damage.

But Trump has declared climate change to be a “hoax”: If the President decrees that the seas will not rise, there is no need to prepare for the possibility that they will.

Here’s Peter Gleick, cofounder of the Pacific Institute:

According to Reuters’s White House sources, the new directive is intended to “streamline the current process” for infrastructure projects. But while the president has promised to run the country like a business, real business leaders are taking the changing climate dead-seriously. A recent example is the huge investment firm Vanguard, with $4 trillion in assets; it’s now requiring the companies it invests in to disclose climate-related risk to their projects.

“Trump made it clear that he recognizes the threat of sea-level rise when he sought to construct a wall protecting his golf course in Scotland,” said Sierra Club executive director Mike Brune. “Unfortunately, this president doesn’t value American lives, taxpayer dollars, and our communities as much as he does 18 holes.”