Members of the so-called Five Eyes spy alliance, as well as Israeli and Saudi officials, fear the identities of foreign assets could inadvertently be shared with Moscow.

The Trump administration has made overtures to a country that Rubio has railed against during most of his career, especially in relation to Russia's backing of countries like Cuba.

MEXICO CITY – Mexican President Claudia Sheinbaum Pardo said Tuesday there was no justification for President Donald Trump 's 25% tariffs on imports from Mexico and her government would respond with tariff and non-tariff measures. More: 'We'll fight to the bitter end': China and Canada retaliate against new Trump tariffs

Referring to the Russian president, she continued, “That’s all we got right now, is Putin’s little ho that is out here really doing the bidding of Russia ... to include Mexico and Canada ...