White House spokesman Jay Carney said US surveillance agencies were only interested in collecting data on people considered a threat to the United States.
Mr Carney told a regular White House news conference:
To the extent data is collected by the NSA [National Security Agency] through whatever means, we are not interested in the communications of people who are not valid foreign intelligence targets, and we are not after the information of ordinary Americans.
More top news
The popular game relies on Google Maps, a problem in South Korea as those functions are limited by the government.
A Met Office warning covering much of England and south-east Wales is expected to remain in place until 11am.
A band of cloud and patchy rain is expected across Scotland and Northern Ireland, moving southeast as the day progresses.