Most Americans have Facebook accounts than having passports, reveals new statistics.
A staggering 155 million Americans - 50 per cent of the population - are on the social network site, while only 115 million people - 37 per cent - have a passport.
There are now 750 million Facebook users worldwide, according to travel website Tripl, which compiled the figures.
Reasons given for the low proportion of Americans with passports include the costs of travelling abroad and the popularity of vacationing at home.
Simon Winchester, who wrote 'The Best American Travel Writing', said that Americans to do have a history of international travel.
"There was essentially no empire and hence little by way of imperial legacy," the Daily Mail quoted him as saying.The country is formidably isolated by thousands of miles of ocean from almost anywhere truly foreign, and getting abroad is very much more costly.
"Americans seldom went to seek their fortunes overseas, as British so often did . . . [and there] is little tradition of American exploration," he added.