Related: US news , United States Congress

1. More US news
   1. Okla. medical chief: Cataloging dead 'horrific' task
   2. Man linked to Boston bombing suspects admits role in 2011 murders
   3. US confirms 4 Americans died in drone strikes
   4. Texas blast shows flaws in emergency planning law
   5. 800,000 live near stockpiles of Texas blast chemical
2. More top stories
   1. Holder says drone strikes since 2009 have killed four U.S. citizens
   2. Man linked to Boston bombing suspects admits role in 2011 murders
   3. Mom in labor as twister destroys hospital
   4. Mom, infant among tornado victims identified
   5. Man knifed to death in suspected London terror attack
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