<p>WASHINGTON - The Constitution must be amended to ensure the continuity of government in case Congress is wiped out by a terrorist attack, a blue-ribbon bipartisan commission will recommend Wednesday.</p>
<p>If a Sept. 11-like attack destroyed Congress, the current system of holding special elections to fill vacancies in the House of Representatives would take too long - an average of four months, depending on the state - the panel found after a year-long study.</p>