<p>An obscure work visa known as the L-1 has become the center of a bitter controversy in the technology industry.</p>
<p>Much like the H-1B before it -- an equally obscure visa that rose to prominence when American workers complained they were being displaced by its recipients -- the L-1 is catching the ire of tech workers and the eye of government regulators who disagree on whether the visa is being used legally.</p>