It really begs the question, what does this Prime Minister have to hide?' asked Conservative MP Michael Cooper. OTTAWA — Liberal MPs once again spent hours Tuesday filibustering a parliamentary committee meeting to prevent Prime Minister Justin Trudeau’s chief of staff, Katie Telford, from testifying about allegations of Beijing’s interference in past elections. ... Conservative MP Michael Cooper.. It’s been now more than 14 hours over four days that the Liberal MPs on this committee have been filibustering for hours and hours and hours on a very simple motion to have the prime minister’s chief of staff, Katie Telford, testify...