The White House has quadrupled the number of signatures required to receive an official response to petitions submitted on its We the People website, after a surge in its popularity.

The Obama administration will now only be required to respond when a petition gathers 100,000 signatures, up from the previous 25,000.

Use of the We the People site doubled in the final two months of 2012, when petitions were added to grant Texas the right to secede from the US, to deport Piers Morgan and to keep him in the US ("because the UK doesn't want him"). All easily passed the 25,000 signature threshold.