Wall St. thinks stocks will rise in 2017 - What could go wrong?

NEW YORK/SAN FRANCISCO (Reuters) - Wall Street's rally could be derailed by renewed worries about President-elect Donald Trump's policies, a resurgent dollar or potential wild-card events like cyber attacks or a trade war, investors say as they look to 2017. Stocks are at record highs on optimism Trump will boost the economy, and strategists in a recent Reuters poll expect more gains next year. Many strategists' top worry is that Trump's efforts to boost the U.S. economy will be diluted or delay