re: Massie is evidently going after Trump. He's big mad over Iran.

Maybe, Massie should study some American history. Does he understand the concept of precedent?

First Barbary War (1801–1805): This conflict began when the Pasha of Tripoli declared war on the United States. President Thomas Jefferson responded by deploying naval forces without seeking a formal declaration of war from Congress.

Second Barbary War (1815): President James Madison sought and received congressional authorization to use military force against Algiers, but this was not a formal declaration of war

What other military action has the US participated without declaring war?

The United States has engaged in numerous military actions without formally declaring war. Some notable examples include:

Korean War (1950-1953): This was termed a "police action" and was conducted under the auspices of the United Nations.

Vietnam War (1955-1975): U.S. involvement escalated without a formal declaration of war, relying instead on congressional resolutions like the Gulf of Tonkin Resolution.

Persian Gulf War (1990-1991): This was authorized by a United Nations resolution and congressional approval but not a formal war declaration.

The U.S. participated in NATO's bombing campaign during the Kosovo War in 1999. This was part of Operation Allied Force, aimed at stopping the ethnic cleansing of Albanians in Kosovo by Serbian forces under Slobodan Miloševic. The campaign lasted from March to June 1999 and involved extensive airstrikes on military targets in Yugoslavia, including in Kosovo and Serbia.

The operation was controversial, as it was conducted without a formal United Nations mandate, but NATO justified it as a humanitarian intervention. It ultimately led to the withdrawal of Yugoslav forces from Kosovo and the establishment of a UN-administered territory.
Afghanistan (2001-present): Military action began following the 9/11 attacks, authorized by Congress but not declared as a war.

Iraq War (2003-2011): Similar to Afghanistan, this was authorized by Congress but not formally declared as a war.

Other actions:

The U.S. has been involved in military actions against Libya on multiple occasions:1986 Bombing of Libya (Operation El Dorado Canyon): This was a U.S. airstrike in response to Libyan involvement in terrorist attacks, including the bombing of a Berlin nightclub. The operation targeted military sites in Tripoli and Benghazi.

Ther actions where war was not declared:

2011 NATO Intervention: The U.S. played a significant role in the NATO-led military intervention during the Libyan Civil War. This was conducted under the United Nations Security Council Resolution 1973, which authorized a no-fly zone and measures to protect civilians. The intervention contributed to the overthrow of Muammar Gaddafi's regime.

2015–2019 Campaign Against ISIL: The U.S. carried out airstrikes and drone strikes in Libya as part of the international campaign against ISIL. These operations targeted ISIL.