President Donald Trump said Mexican President Claudia Sheinbaum rejected his proposal to send U.S. troops to Mexico to help thwart the illegal drug trade because she is fearful of the country’s powerful cartels.

Sheinbaum said she responded by rejecting the offer and telling the U.S. president her country is "not for sale."

Trump has said publicly that the U.S. would take unilateral military action if Mexico failed to dismantle drug cartels. The two countries have had several calls in recent months to discuss security issues,