*Caution on Twitter urged as tourists barred from US – Holidaymakers have been warned to watch their words after two friends were refused entry to the US on security grounds after a tweet* – from **BBC News**
Travelling Through Life
*Caution on Twitter urged as tourists barred from US – Holidaymakers have been warned to watch their words after two friends were refused entry to the US on security grounds after a tweet* – from **BBC News**
