DENVER — A former Veterans Affairs Department executive who was harshly criticized by Congress for massive cost overruns at a new Colorado VA medical center said he was never told the price had ballooned to more than $1.7 billion before he left the agency, and does not know how it happened.

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DENVER — A former Veterans Affairs Department executive who was harshly criticized by Congress for massive cost overruns at a new Colorado VA medical center said he was never told the price had ballooned to more than $1.7 billion before he left the agency, and does not know how it happened.