What does Mexico expect from the amicus curiae submitted to the US court for the Texas law?

(CNN) –– “An environment of harassment, harassment, harassment” is one of the side effects of the controversial Texas SB4 law, which, as he explained, would allow the detention and deportation of those suspected of entering the United States illegally. This Thursday Alejandro Celorio Alcántara, legal adviser to the Mexican Ministry of Foreign Affairs, in an interview with Carmen Aristegui for CNN.

As President Andrés Manuel López Obrador routinely does, the Mexican government's rejection of the controversial law was more than a friendly rejection, the lawyer said, but instead “what we want the three judges on the appeals panel to know is how Mexico sees this law. The implications of this law.”

According to Celorio, the negative impact of the SB4 law will not only reach immigrants, but also tourists, students and businessmen visiting the United States as anti-Mexican harassment becomes more widespread.

What is Mexico doing about it?

On Thursday, the López Obrador government filed a “friend of the court (amicus curiae) brief before the Court of Appeals for the Fifth Circuit” detailing how the Texas immigration law would affect Mexican nationals.

“This law is going to create tensions between the U.S. and Mexico because we're talking to the U.S. on immigration, and all of a sudden a border state pops up and we're going to send people back and, hey, the federal government, well, I'm talking to you, why is this coming out now, and other states that want to do it? Will there be?”, Celorio Alcantara explained.

As the legal representative explained, “We are not a party to the case, but we are presenting our opinion.”

Who is a part of the case?

“Civil society organizations filed a lawsuit against the SB4 law, suing Texas arguing that the law is unconstitutional,” and the U.S. Department of Justice filed a “similar request,” Mexican Foreign Ministry legal adviser Carmen Aristegui said.

In a statement sent to CNN by the Mexican Foreign Ministry, there are two disputes over the law. The first was filed by the U.S. government against El Paso County, Texas, along with civil organizations, and the second against the state of Texas, its governor, Greg Abbott, and the director of the state's Department of Public Safety.

The Fifth Circuit and the Supreme Court, Who's Who?

Late Tuesday, the New Orleans-based Fifth Circuit Court of Appeals suspended the Texas immigration law again, hours after the Supreme Court cleared the way for the state to begin enforcing the measure while it considers the merits of the case.

At the start of this judicial drama, a federal trial judge suspended the application of the state law. Texas appealed to the Fifth Circuit — conservative in profile and largely favorable to that state's positions. The Fifth Circuit court took an administrative action allowing SB4 to go into effect while reviewing the Texas case. The Department of Justice appealed to the Supreme Court. The high court initially suspended SB4 from taking effect twice, but this week, a day after the second suspension, the Fifth Circuit said the Texas law could be put into effect while deciding a substantive issue. Justice Amy Coney Barrett criticized the New Orleans court's use of administrative decisions, although she voted with the Supreme Court's conservative majority that granted Texas permission. It's not clear if that had anything to do with that implied criticism, but hours later, an appeals court again suspended the law's application. And so far he has not made any decision public.

In the letter, the Mexican Ministry of Foreign Affairs highlighted that “the problem with these legal actions is the temporary suspension of the law's entry into force, not the substance of the matter (the content of the law, its constitutionality and implications).”

According to the Secretariat's legal representative, “We've seen the rise and fall of these suspensions, and we'll certainly see more of that in the coming weeks.”