05/10/12 | by Gina Hornung

Just as 1 World Trade Center surpassed the Empire State Building in April, triumphantly claiming the title as New York City's tallest building, the building's historic goal to become the country's tallest is now being challenged.

Link to Article: 
http://www.huffingtonpost.com/2012/05/10/1-world-trade-center-tallest-building-united-states-challenged-mast_n_1505747.html?ref=new-york
Article Source: 
Huffington Post