Vivek Ramaswamy, “We need a border wall with Canada.”

The total length of the continental border is 3,145 kilometers (1,954 miles). From the Gulf of Mexico, it follows the course of the Rio Grande (Río Bravo del Norte) to the border crossing at Ciudad Juárez, Chihuahua, and El Paso, Texas.

Source: https://en.wikipedia.org/wiki/Mexico–United_States_border

The Canada–United States border is the longest international border in the world. The terrestrial boundary is** 8,891 km long**. The land border has two sections: Canada’s border with the contiguous United States to its south, and with the U.S. state of Alaska to its west.

Source: https://en.wikipedia.org/wiki/Canada-United_States_border

In 2005, there were 75 miles of fencing along the border. https://en.wikipedia.org/wiki/Mexico–United_States_border_wall

also from that article:

In October 2023, Biden announced he is restarting wall construction due to the surge of migrant crossings

In 18 years, the U.S. hasn’t finished building a sufficient wall with Mexico.

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He knows he’s got 8 years at best, right? We’ll be fighting Klingons in space long before that wall is finished.