(Bloomberg) — U.S. Senator Elizabeth Warren is pressing a Bitcoin miner about the impact of its operations on climate change, the local environment and power prices as part of her campaign to crack down on wasteful cryptocurrency mining.Most Read from BloombergReliving the New York Subway Map Debate‘Ghost Signs’ Haunt London’s Reviving NeighborhoodsChina Cash Flowed Through Congo Bank to Former President’s Cronies‘Pension Poachers’ Are Targeting America’s Elderly VeteransAutomating the War on N