Liberal Party member warned MP Dong of CSIS surveillance, national security source says ROBERT FIFE STEVEN CHASE OTTAWA BUREAU CHIEF SENIOR PARLIAMENTARY REPORTER OTTAWA PUBLISHED 4 HOURS AGO UPDATED 2 HOURS AGO This content is available to globeandmail.com subscribers. Join a national community of curious and ambitious Canadians Subscribe to globeandmail.com for unlimited access to Canada’s leading independent journalism. $7.99 PER WEEK JUST $1.99 PER WEEK FOR THE FIRST 52 WEEKS SUBSCRIBE NOW CANCEL ANYTIME New Subscribers Only Already a print newspaper subscriber? Get full access to globeandmail.com Already subscribed to globeandmail.com? Log in to keep reading Report an editorial error Report a technical issue Editorial code of conduct Related stories CSIS prepped PMO briefing on China’s election meddling, documents at inquiry show PMO, top ministers and senior officials received 34 briefings on foreign interference since 2018, CSIS says CSIS Director recalled after PMO staff say they weren’t told about China interference in 2019 and 2021 elections More from politics MPs approve rare censure of ArriveCan contractor for refusing to answer questions PMO, top ministers and senior officials received 34 briefings on foreign interference since 2018, CSIS says Politics Briefing: Trudeau challenged to a TV debate on carbon pricing Infectious-disease scientist fired from Winnipeg laboratory surfaces in China Freeland doesn’t rule out new taxes on wealthy or corporate Canada in upcoming budget National security adviser says foreign meddling efforts do not equal success