A bipartisan effort to halt the Trump administration’s deadly military strikes against alleged Venezuelan drug traffickers was narrowly defeated in the US Senate on Wednesday night. The result triggered outrage among Democratic lawmakers, who accused Congress of failing to uphold its constitutional duty to decide whether the country should enter a conflict.

Background of the Strikes

Over the past two months, the U.S. military has attacked at least four boats in the Caribbean Sea, killing 21 people. The Trump administration defended these operations, claiming the strikes targeted “narco-terrorists” linked to Venezuela’s drug networks. President Trump officially informed Congress that the United States was now in “armed conflict” with these alleged traffickers.

However, the justification behind the killings has raised serious concerns. During several classified briefings, military officials reportedly failed to clearly identify the victims or explain why lethal force was used instead of the long-standing practice of interdicting suspect vessels at sea.

Wednesday’s Senate vote marked the most direct and tense confrontation between lawmakers and the administration since the strikes began.

Bipartisan Concerns Over Legality

While Democrats have strongly labelled the strikes unconstitutional, some Republicans have privately questioned their legality. Senator Tim Kaine (D-Virginia), who led the measure to halt the operations, said before the vote, “What we are doing is a very simple, straightforward resolution that just says, Congress, be Congress. These military actions should stop unless authorised.”

Despite this push, the Trump administration has escalated its military presence in the region by deploying Navy warships and aircraft, signaling plans to expand operations from “international waters” to direct strikes on Venezuelan soil.

Earlier this month, the administration notified Congress that “The United States has now reached a critical point where we must use force in self-defence and defence of others against the ongoing attacks by these designated terrorist organisations.”

Lawmakers Question Lack of Evidence

Several lawmakers expressed frustration over the administration’s lack of transparency. Adam Schiff (D-California) said, “I have no idea precisely the identities of who was on these ships, or even whether the administration knows their identities.”

Republican Rand Paul (R-Kentucky), known for his opposition to unchecked military action, condemned the strikes as “extrajudicial killings.” He demanded accountability, saying, “Is it too much to ask to know the names of those we kill before we kill them, to know what evidence exists of their guilt?” He described the administration’s justification as “madness.”

In the 48–51 vote, only two Republicans — Rand Paul and Lisa Murkowski — supported the resolution, breaking party lines. One Democrat, John Fetterman (D-Pennsylvania), voted against the measure.

Colombia Raises Alarm Over Civilian Deaths

Adding to the controversy, Colombian President Gustavo Petro revealed on X (formerly Twitter) that one of the boats targeted by the U.S. military carried Colombian citizens. His statement deepened international concern about the legality and human cost of the strikes.

Meanwhile, frustration grew among U.S. lawmakers from both parties after recent briefings with Pentagon General Counsel Earl Matthews provided little clarity. One person familiar with the closed-door meetings told The Washington Post, “The sessions went very, very poorly.”

The Roots of the Tension

The current confrontation follows President Trump’s February declaration designating eight groups as foreign terrorist organizations, including Tren de Aragua, a violent Venezuelan gang that Trump has claimed is controlled by President Nicolás Maduro.

This move has fueled fears that the U.S. is edging closer to a broader military confrontation in Latin America — without clear congressional authorization or international consensus.

The failed Senate motion highlights growing divisions over the Trump administration’s handling of military operations in Latin America. While supporters argue the strikes are necessary to combat narcotics and terrorism, critics see them as unauthorized acts of war that lack transparency, accountability, and respect for international law.