https://www.motherjones.com/politics/2019/04/trump-impeachment-supreme-court/?fbclid=IwAR36uHiamYRQ_ohSJFSf9Wk98VL6KDzYZ95j0fDax02eLKLAOmrFh8nhjhQ
"Contrary to Trump’s thinking, Congress does indeed have the power to begin impeachment proceedings. Moreover, the Supreme Court would not be able to block Congress from the process, as legal experts quickly noted."