Speaking on a call with reporters earlier this week, a senior State Department official declined to say whether more sanctions were under consideration, adding that the USA would "use all economic, political, and diplomatic tools at our disposal".
Tillerson later held a closed-door meeting with Mexican President Enrique Pena Nieto during a time when relations have also been strained by US threats to pull out of the North American Free Trade Agreement (NAFTA).
"China, as it does in emerging markets throughout the world, offers the appearance of an attractive path to development, but in reality this often involves trading short-term gains for long-term dependency", Tillerson said in a speech at the University of Texas.
U.S. Secretary of State Rex Tillerson has urged Mexico to be on the lookout for Russian meddling in its elections, citing reports of Moscow's interference in the electoral process of countries around the world. "Latin America does not need a new imperial power", he said.
"It will have to be the Venezuelans themselves who find a peaceful route, a peaceful solution to this crisis", he said.
Trudeau strongly reiterates support for Kinder Morgan pipeline expansion
And Notley has said this is just the first of many moves against British Columbia. Horgan said there is nothing for Alberta to take to court at this point.
Secretary of State Rex Tillerson on Thursday warned countries in the Western Hemisphere to beware of Chinese investment, saying it is reminiscent of European colonialism.
Tillerson's visit to Mexico is the first stop on a six-day trip through Latin America that will also take him to Argentina, Peru and Colombia, with a final stop in Jamaica on February 7.
Tillerson, who received a standing ovation at the university, his alma mater, outlined a strategy that focuses on ramping up worldwide pressure on Maduro to agree to credible elections to ease the country's economic and political crisis.
US President Donald Trump has himself suggested possible military intervention in Venezuela, though that was widely rejected in Latin America.
Speaking ahead of a five-nation Latin America tour, the US diplomat insisted the Trump administration was not advocating "regime change", but suggested the Venezuelan leader could flee to ally Cuba.