As the United States escalates its military campaign against drug traffickers near Venezuelan waters, destroying a vessel that officials said carried drugs, the Trump administration is simultaneously weighing whether to cut aid to Colombia, the world’s top cocaine producer.

For more than four decades, Colombia has been a cornerstone of U.S. counternarcotics strategy abroad, receiving billions in aid while providing intelligence on routes, networks and shipments.

Now that partnership is under threat.

At issue is a process called certification, an annual review with results expected to be announced on Monday about whether Colombia is doing enough to combat drugs.

While it is unknown what the Trump administration will do, decertification could have huge consequences, suspending hundreds of millions of dollars in aid, prompting sanctions and visa restrictions on government officials, and damaging one of Washington’s closest alliances in Latin America.

The U.S. State Department declined to comment on the administration’s plans.

But in recent months, Trump officials have been vocal in their criticism of Colombia for failing to reduce cultivation of coca, the raw material for cocaine.

“It is time to see results,” the U.S. State Department’s international narcotics agency posted on X. “Given record coca cultivation, there needs to be immediate and tangible progress on eradication.”