Answer: filibusters

AnswerCrossword Clue
FILIBUSTERSPowerful parliamentary weapons in U. S. Senate.
FILIBUSTERSBill-blocking oratory.
FILIBUSTERSWashington stratagems.
filibustersAn action such as a prolonged speech that obstructs progress in a legislative assembly while not technically contravening the required procedures
filibustersA person engaging in unauthorized warfare against a foreign country