mitigating factor
...that the U.S. Supreme Court ruled that a mental illness is a mitigating factor in death penalty cases, but the Supreme Court of California in one case ruled that mental illness is an aggravating factor?
...that the <a class="mw-redirect" href="./United_States_Supreme_Court" id="mwCk0" rel="mw:WikiLink" title="United States Supreme Court">U.S. Supreme Court</a> ruled that a <a href="./Mental_disorder" id="mwCk4" rel="mw:WikiLink" title="Mental disorder">mental illness</a> is a  <b id="mwCk8"><a href="./Mitigating_factor" id="mwClA" rel="mw:WikiLink" title="Mitigating factor">mitigating factor</a></b>  in <a href="./Capital_punishment_in_the_United_States" id="mwClE" rel="mw:WikiLink" title="Capital punishment in the United States">death penalty cases</a>, but the <a href="./Supreme_Court_of_California" id="mwClI" rel="mw:WikiLink" title="Supreme Court of California">Supreme Court of California</a> in one case ruled that mental illness is an <a class="mw-redirect" href="./Aggravating_factor" id="mwClM" rel="mw:WikiLink" title="Aggravating factor">aggravating factor</a>?