The Trump administration’s tariffs could cost Nike (NKE) $1 billion if left at current levels, according to the sportswear giant's CFO. “These tariffs represent a new and meaningful cost headwind,” Matt Friend said during the company’s earnings conference call Thursday, saying that the company is taking action to mitigate their impact.  China accounts for roughly 16% of the company’s footwear imported into the U.S., the CFO said, with Nike expecting to reduce that to a “high single-digit range” by the end ...