I have always been under the mistaken belief that a product that is enriched meant it will improve performance. Ethanol-enriched fuel costs me more money and lowers my fuel efficiency. Doesn&#8217;t make a lot of sense to me.</p><p><p align="right"><strong>Gary Levin</strong></p> <p align="right">Overland Park</p> The perpetual muckraker, Michelle Malkin, never fails to astound (5/2, Opinion, &#8220;It&#8217;s difficult to believe Obama denial of pastor&#8221;). Why does she find it impossible to believe Obama when he says he didn&#8217;t know the contemptible side of Jeremiah Wright, his former pastor? A lot of us didn&#8217;t see the dark side of Richard Nixon, either, and he was our president.</p><p><p align="right"><strong>Antoinette Clarke</strong></p> <p align="right">Kansas City</p> Letter writer Pam Deghand (5/2) says, in regard to Jeremiah Wright, that history is the past. Reminds me of the old saying, &#8220;We may be through with the past, but the past isn&#8217;t through with us.&#8221;</p><p><p align="right"><strong>Sean McDonald</strong></p> <p align="right">Kansas City</p>