<p>A Chinatown cook's fight to re-enter the U.S. in 1895 went up to the Supreme Court, which upheld his claim to birthright citizenship and guaranteed it for all through the 14th Amendment. </p>
<p>Once the most famous Chinese dish in America, chop suey helped spur the growth of Chinese restaurants. A Smithsonian curator is now criss-crossing the country to research its beginnings. </p>