CTV, CanWest want to delete U.S. signals

"The broadcasters now wish to expand the simultaneous substitution policy with program deletion. It would provide that when a Canadian broadcaster purchases the rights to a U.S. program, they would have the right to air it whenever they choose within a seven-day window. The hook is cable and satellite companies would be required to block the U.S. broadcast of the same program if it did not air simultaneously" Toronto Star