- S&P 500 firms could see an 8% hit to earnings if Mexico and Canada retaliate on tariffs, BofA says.
- Wall Street expects an EPS drawdown to dent the S&P 500’s rally.
- US earnings are otherwise set for strength amid upbeat corporate sentiment.
A tit-for-tat trade war between the US and its neighbors could spell real trouble for S&P 500 earnings.