So Vice President Joe Biden wasn’t the only one making a stealth trip to an overseas hot spot over the Independence Day holiday weekend.

Turns out Homeland Security Secretary Janet Napolitano ended her European visit with an unannounced seven-hour stop in Pakistan on Friday and discussed border security and other issues with officials including the president, prime minister, and interior minister.SPAIN/

Of course, the U.S. Department of Homeland Security doesn’t have any role in securing the border between Afghanistan and Pakistan, so it was more of a discussion about her experience in dealing with U.S.-Mexican border security issues.

We are told the fence issue came up. Napolitano, the former governor of Arizona, which shares a border with Mexico, has never been a big fan of fencing off the border.

The United States has been building a  670-mile fence along its nearly 2,000-mile  border with Mexico. Just an observation from far away – building a fence along the 1,100-mile border between Pakistan and Afghanistan would probably involve greater challenges given the treacherous mountainous terrain, not to mention militant hideouts.AFGHANISTAN/