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.

President Trump confirmed on Sunday that he had raised the idea with his Mexican counterpart, Claudia Sheinbaum, who rejected it.

Bands in Mexico are self-censoring their ballads about the drug underworld out of fear of being blocked from touring the US, in a development that experts say raises troubling questions about free speech in America.