As part of Congress' power to impeach, members can request documents, hold hearings and issue subpoenas. And when people refuse to comply, Congress has several options.
원문출처 : https://www.cnn.com/videos/politics/2019/11/11/congressional-oversight-subpoenas-impeachment-mh-orig-vstan.cnn
원문출처 : https://www.cnn.com/videos/politics/2019/11/11/congressional-oversight-subpoenas-impeachment-mh-orig-vstan.cnn