Long-term impact of Walz's executive order blocking mining depends on his successor

An executive order Gov. Tim Walz signed Tuesday blocks copper mining near the Boundary Waters Canoe Area. But whether the ban becomes permanent could depend on Walz's successor. El Niño is strengthening quickly, according to NOAA, and that could have big implications for Minnesota’s upcoming winter. A federal judge will hear arguments Wednesday on a request to upend Minnesota's new law banning use…