It took a lawsuit to force Koch to clean up its act, but Texas Gov. George W. Bush (R) wouldn’t be interested in that sort of litigation as president. “I do not believe we can sue our way to clean air and clean water,” Bush said yesterday at a Rotary club luncheon in New Hampshire. He said he’s committed to a “balanced” approach to environmental issues that would give more weight to the interests of industry and landowners. Meanwhile, the League of Conservation Voters warned yesterday that Bush “represents the biggest threat to the environment” of any of the leading presidential candidates. The group pointed to environmental concerns in Texas, including worsening air quality, weak environmental regulations, and neglect of state parks, and to Bush’s opposition to the Kyoto climate change treaty. “He would jeopardize three decades of national environmental progress,” said LCV Pres. Deb Callahan.