Why Can't Biden Stop This Invasion?
Article IV of the Constitution addresses the obligations of the federal government to the state governments that were being asked to surrender aspects of their sovereignty to form our new Union.
"The United States shall guarantee to every State in this Union a Republican Form of Government," reads Article IV, "and shall protect each of them against Invasion."
Late in the War of 1812, U.S. forces held Fort McHenry in Baltimore Harbor through a nightlong attack but failed to stop an invading British army at Bladensburg, which marched on to Washington and burned the Capitol and White House.
To repel a British invasion and the capture of New Orleans, and a blockading of the Mississippi, Maj. Gen. Andrew Jackson mustered a defending army that almost annihilated the invading British force.
Half a decade later, President James Monroe sent Jackson to halt the raids of marauding Indians out of Spanish Florida into Georgia.
Jackson stormed into Florida, crushed the Indian tribes, sent the Spanish governor packing to Cuba and hanged two British subjects for collaborating with the enemy.
Secretary of State John Quincy Adams persuaded the Spanish to cede the "derelict province" they could not control -- or Jackson might return, and we might just take it.
Madrid got the message. We got Florida.
When Pancho Villa sent a raiding party across the U.S. border in 1916 and killed Americans in Columbus, New Mexico, President Woodrow Wilson sent Gen. John Pershing and an army that grew to 12,000 into Mexico to run him down.
In 1954, after a million Mexicans had crossed over into the United States, President Dwight Eisenhower sent Gen. Joseph Swing to send them back. In the vernacular of the time, the mission was named Operation Wetback.