Military action in Venezuela emerges as an issue in a closely watched GOP primary in Kentucky

President Donald Trump's military intervention in Venezuela has emerged as a flash point in the closely watched Republican primary campaign between Kentucky U.S. Rep. Thomas Massie, a long-running Trump antagonist, and retired Navy SEAL officer Ed Gallrein, who has the president's backing.

Massie, showing his non-interventionist leanings, fired off a series of social media posts criticizing the military operation that captured Nicolás Maduro and removed him from the South American country.

“Wake up MAGA,” Massie wrote. “VENEZUELA is not about drugs; it’s about OIL and REGIME CHANGE. This is not what we voted for.”

The congressman claimed that Trump wrongly circumvented Congress when ordering the attack.

“In the Constitution, the Founders vested war making power in Congress, not the Executive branch,” he wrote.

Gallrein responded that Massie had “shown his true colors” by criticizing the military operation.

“This operation sends a clear message: the United States will not allow rogue regimes to enable criminal networks or use oil and other resources to fuel our global adversaries,” Gallrein said on social media. “Holding bad actors accountable is how we restore law and order, deter aggression, and protect American families.”

Gallrein added that American intervention “opens the door to a new chapter for the people of Venezuela — one defined not by decades of oppression, but by the possibility of peace and prosperity.”

He is Trump's choice to challenge Massie, a maverick who has had an up-and-down relationship with Trump. The primary election in May will test Trump’s hold over Republican politics. The sudden emergence of Venezuela as an issue will test the president's ability to hold together his coalition during a challenging election year for Republicans that could be defined by domestic concerns like health care and affordability.

The libertarian-leaning Massie has won reelection by lopsided margins since entering Congress in 2012 — even when he incurred Trump’s wrath.

The military action in Venezuela is the latest example of Massie standing up to Trump.

The congressman opposed the massive tax breaks and spending cuts package last year that Trump calls “beautiful” but Massie says will grow the national debt and hurt the economy. Massie said the president lacked authority to attack Iran’s nuclear sites without congressional approval. And Massie was at the forefront of efforts to force the public release of case files on the sex trafficking probe into the late Jeffrey Epstein.

In his bid to unseat the congressman, Gallrein has the president’s vaunted political operation on his side, and a super PAC launched by Trump aides has run ads attacking Massie. But he will confront an entrenched, well-funded incumbent in Massie.

Trump on Monday reiterated his support for Gallrein on his social media platform and urged other Republicans to stay out of the May primary.

“I have heard that there are other Candidates exploring a run for this seat, but I am asking all MAGA Warriors to rally behind Captain Ed Gallrein, the Candidate who is, far and away, best positioned to DEFEAT Third Rate Congressman Thomas Massie, a Weak and Pathetic RINO from the beautiful Commonwealth of Kentucky,” Trump said.

So far, at least two Democrats have filed to run for the congressional seat stretching across northern Kentucky, along with a third Republican besides Massie and Gallrein. The eventual Republican nominee will be heavily favored in a district last represented by a Democrat two decades ago.