Livia Acosta Noguera is alleged to have discussed possible cyber-attacks on the US while based at the Venezuelan embassy in Mexico in 2008.
The FBI has been investigating the comments, AP news agency says.
The US state department did not comment on the reason for the expulsion.
Four US members of Congress wrote to the US Secretary of State Hillary Clinton in December raising concerns about the Venezuelan diplomat.
Their letter says that according to a documentary broadcast on the Spanish-language network Univision last month, Livia Acosta Noguera discussed attacking the US government’s computer systems with diplomats from the Iranian and Cuban embassies and students posing as extremists, while she was vice secretary at Caracas’s embassy in Mexico.
The congressmen requested the state department investigate the claims, and if found true, “declare her a persona non grata and require her immediate departure from the United States”.
Misleading allegations, rumours and outright lies about voting and fraud are flooding online spaces in…
At least 158 people have died in Spain's worst flooding disaster in generations. On October…
Google has been fined two undecillion (a two followed by 36 zeroes) roubles by a…
Embarking on a home remodel is an exciting journey, promising enhanced comfort, increased property value,…
The US presidential candidates continued to campaign across key swing states on October 20. Footage…
Elon Musk has said he will give away $1 million a day to a registered…