The Chinese envoy to Canada warned against letting politics interfere with its multibillion dollar takeover bid for Calgary-based Nexen.

Oil Storage Tank

Last week, shareholders at the 40-year-old oil and natural gas company voted in favor of the proposal in what could be a landmark for a Canadian business. Lawmakers in Ottawa, however, have expressed reservations about Beijing's dominance in a market habitually tied to the United States. Though the Canadian government is keen to break its reliance on the U.S. markets, pressure from Beijing could force Ottawa into isolation.

Nexen announced last week that the overwhelming majority of its shareholders voted in favor of the July takeover bid by China National Offshore Oil. At $15 billion, CNOOC said the deal represents a 61-percent premium to Nexen's close price as of July 20. Not only would the deal give CNOOC access to Nexen's holdings in Nigeria and the U.S. Gulf of Mexico but it would also funnel significant investments into the Canadian oil and natural gas sector.

The Canadian government of Prime Minister Stephen Harper had said it was important for the country to expand its economic footprint outside of North America. The country's pipeline ambitions in the United States are already in limbo in part because of the U.S. presidential campaign season.