Eight prototypes of President Donald Trump's proposed border wall with Mexico were revealed, and now the next step is to approve them. The contention walls must be subjected to various tests to ensure that they meet the main objective established by Trump; prevent the passage of undocumented immigrants. 

“The thing I am most impressed by is the scale,” said Customs and Border Protection Acting Commissioner Ron Vitiello, according to Fox News. “A lot of things have to happen now - testing, evaluation, estimates, appropriation. We will do it all as quickly and safely as we can to give as much security to the homelands as we can.”

The walls are 30 feet high and six-feet deep, four of them are made with concrete, and the four others are made with metal, concrete and other materials. According to The New York Times, the Department of Homeland Security officials said they would test the mockups to determine which worked best in curbing illegal immigration and drug trafficking.

For now, the new 2,000-mile border is only aspirational because Congress hasn't still aproved the funds Trump's adminitration is asking for, that's why Trump continues to insist that Mexico will pay for the construction of the barrier between both countries, a situation that the Mexican government has rejected again and again.

The money needed to pay for that wall has been as controversial as the wall itself. Texas Republican Senator Ted Cruz introduced a two-page bill, in which he advises the US government to use the money confiscated from Joaquín "El Chapo" Guzman and the Sinaloa cartel to finance the construction of the wall on the border with Mexico.

On January 25, 2017, Trump signed the executive order to begin the construction of a border wall with Mexico. There he establishes a new vision to strengthen the borders of his country and increase efforts to deport some of the 11 million undocumented immigrants living in the United States. "A nation without borders is not a nation," Trump said during his speech at the headquarters of the Department of Homeland Security. "From today, the United States once again takes control of its borders."

In March, 2017, Mexican Delegate Braulio Guerra of the ruling Partido Revolucionario Institucional (Institutional Revolutionary Party or PRI) climbed, according to him, with no problem, the dividing wall in the border city of Tijuana to demonstrate U.S. President Donald Trump that his idea of building a barrier between the two countries is "absurd" and "unnecessary."

According to Guerra, what he did as an evidence of how illogical the idea of spending fifteen billion dollars in a new border wall is. He also mentions that time former President John F. Kennedy expressed: "Look back to Mexico and Latin America and cooperate in their development, the economy, and employment."