WASHINGTON (Reuters) - Democratic presidential nominee Hillary Clinton thinks U.S. regulators should closely scrutinize AT&amp;T's acquisition of Time Warner, her spokesman said on Sunday.<div><a href="http://feeds.reuters.com/~ff/reuters/technologyNews?a=ZNbEuXP3f-o:TMUREMKS0o0:yIl2AUoC8zA"><img src="http://feeds.feedburner.com/~ff/reuters/technologyNews?d=yIl2AUoC8zA" border="0" /></a> <a href="http://feeds.reuters.com/~ff/reuters/technologyNews?a=ZNbEuXP3f-o:TMUREMKS0o0:V_sGLiPBpWU"><img src="http://feeds.feedburner.com/~ff/reuters/technologyNews?i=ZNbEuXP3f-o:TMUREMKS0o0:V_sGLiPBpWU" border="0" /></a> <a href="http://feeds.reuters.com/~ff/reuters/technologyNews?a=ZNbEuXP3f-o:TMUREMKS0o0:-BTjWOF_DHI"><img src="http://feeds.feedburner.com/~ff/reuters/technologyNews?i=ZNbEuXP3f-o:TMUREMKS0o0:-BTjWOF_DHI" border="0" /></a></div><img src="http://feeds.feedburner.com/~r/reuters/technologyNews/~4/ZNbEuXP3f-o" height="1" width="1" alt="" />