US STOCKS-Wall Street drops; Pelosi says to start formal impeachment inquiry <!-- no image --> <div>* Indexes down: Dow 0.5%, S&P 0.8%, Nasdaq 1.5% (Updates close with Pelosi announcement, Nike shares up after the bell)<div class="feedflare"> <a href="http://feeds.reuters.com/~ff/reuters/UKBankingFinancial?a=A12OAoIdSYU:CNXc9-0J2AY:yIl2AUoC8zA"><img src="http://feeds.feedburner.com/~ff/reuters/UKBankingFinancial?d=yIl2AUoC8zA" border="0"></a> <a href="http://feeds.reuters.com/~ff/reuters/UKBankingFinancial?a=A12OAoIdSYU:CNXc9-0J2AY:V_sGLiPBpWU"><img src="http://feeds.feedburner.com/~ff/reuters/UKBankingFinancial?i=A12OAoIdSYU:CNXc9-0J2AY:V_sGLiPBpWU" border="0"></a> <a href="http://feeds.reuters.com/~ff/reuters/UKBankingFinancial?a=A12OAoIdSYU:CNXc9-0J2AY:F7zBnMyn0Lo"><img src="http://feeds.feedburner.com/~ff/reuters/UKBankingFinancial?i=A12OAoIdSYU:CNXc9-0J2AY:F7zBnMyn0Lo" border="0"></a> </div><img src="http://feeds.feedburner.com/~r/reuters/UKBankingFinancial/~4/A12OAoIdSYU" height="1" width="1" alt=""></div> Posted by Reuters