A simmering diplomatic stand-off over deportation flights spilled onto social media Sunday, threatening the once close relationship between the US and Colombia and further exposing the anxiety many feel in Latin America towards a second Trump presidency.

Colombia’s president tussled by tweet with President Donald Trump this weekend, pulling back from the cusp of a trade war after the White House insisted the South American nation accept deportees as part of Trump’s hardline immigration push.

The Trump White House is claiming victory in a showdown with Colombia over deportees from the U.S. as the new president escalates a promised crackdown on undocumented immigrants. The South American nation backed down from a confrontation over the deportation flights after Trump threatened to impose tough tariffs and other sanctions.