Vivek Warrier comments in InHouse's cover story, "Mastering the art of the cross-border deal" in the magazine's cross-border edition. He looks at the due diligence companies need to do and why environmental issues can be a big surprise for acquirers of Canadian companies. “It’s allocation of risk with respect to environmental liabilities, particularly as it relates to asset transactions in the oilpatch,” he says. Traditionally in Canada, purchasers in energy deals were assumed to take on all environmental liabilities retroactively assuming that there was no misrepresentation on the part of the seller, says Warrier. “That’s sometimes a tough pill to swallow for an inward-coming investor.”