EXPLAINER-Democrats Warren and Sanders want wealth tax; economists explain how it works <!-- no image --> <div>From 1982 to 2018 the share of U.S. wealth held by the 400 richest Americans is estimated to have grown from 1% to around 3.5%, or probably around $3 trillion.<div class="feedflare"> <a href="http://feeds.reuters.com/~ff/reuters/UKBankingFinancial?a=gaDHHjYU670:6UTjJCqsC4o: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=gaDHHjYU670:6UTjJCqsC4o:V_sGLiPBpWU"><img src="http://feeds.feedburner.com/~ff/reuters/UKBankingFinancial?i=gaDHHjYU670:6UTjJCqsC4o:V_sGLiPBpWU" border="0"></a> <a href="http://feeds.reuters.com/~ff/reuters/UKBankingFinancial?a=gaDHHjYU670:6UTjJCqsC4o:F7zBnMyn0Lo"><img src="http://feeds.feedburner.com/~ff/reuters/UKBankingFinancial?i=gaDHHjYU670:6UTjJCqsC4o:F7zBnMyn0Lo" border="0"></a> </div><img src="http://feeds.feedburner.com/~r/reuters/UKBankingFinancial/~4/gaDHHjYU670" height="1" width="1" alt=""></div> Posted by Reuters