"...our current archbishop Cardinal Jorge Bergoglio encourages us in our aspiration to see the initiation of the cause of Chesterton to the altars. He has given his approval to the text of a private prayer to that purpose."

-From a letter written by an Argentinian ambassador, on March 10, 2013 (Three days later Cardinal Bergoglio became Pope Francis)

For more information, you can watch the recorded video of the August 2013 Virtual Society Meeting [for the American Chesterton Society], where this is mentioned.

http://new.livestream.com/amchestertonsoc/august2013/videos/26533599

Also, a good post:

"Saint" G.K. Chesterton? Cause Moves Forward