The Globe and Mail reports in its Wednesday edition that a senior project manager for Parliament Hill's Centre Block renovation, estimated to cost up to $5-billion, came under fire Tuesday over the amount of American steel being used in the construction. The Globe's Ian Bailey writes that amid trade tensions with the United States, Conservative MP Michael Cooper was pushing for clarification on the steel purchases. Jennifer Garrett, who was providing an update to MPs, said 65 per cent of the steel purchased to date is Canadian and that going forward the intention is for the rest of the steel to be sourced from Canada. The cost for the upgrade to the block is set to reach between $4.5-billion and $5-billion by the time it is done in 2031, after 13 years of work. "I am pleased to report that efforts are under way to increase Canadian steel content," Ms. Garrett, assistant deputy minister, told MPs at the procedure and house affairs committee hearing. She conceded that 35 per cent of the steel for the uniquely Canadian project has come from the United States, Europe and Asia. Centre Block is the Gothic Revival-style complex at the heart of Parliament Hill. Its features include the Peace Tower. The building opened in 1920.