Countries are being split into three categories; green, amber or red, depending on how high-risk they are.
But for couples with partners who do not live in a qualifying country, the announcement is yet more bad news following more than a year of separation.
Garrett Leibovitz, from Kansas, has not seen his London-based fiancée Vanessa Torres Gonzales for 15 months.
Campaign group Love Is Not Tourism has brought struggling couples together to fight for couples separated by closed borders to be reunited.