<p>Dozens of law enforcement officers picked over a miles-long crime scene bisecting a rural South Texas town Tuesday, collecting evidence after a U.S. Immigration and Customs Enforcement agent was shot while conducting surveillance.</p>
<p>The agent with ICE's Homeland Security Investigations was shot early Tuesday near Hargill, about 25 miles northeast of McAllen. The agent was conducting surveillance related to an ongoing criminal investigation, ICE spokeswoman Nina Pruneda said. The agent was taken to a local hospital and was undergoing surgery, she said.</p>