It's no secret to anyone that one of the keys to the success of the Trump campaign has been its anti-immigrant agenda.

In a political moment in which the Democrats are recovering strength with the fixed - and probably successful - goal to retake the majority in Congress, the president has unleashed his anger against a new caravan of refugees that started its course on Monday from Honduras bound for the U.S. border.

The national media reported that the new caravan has more than a thousand people and is expected to "continue to grow as it crosses Guatemala and Mexico."

The president has turned his anger against these immigrants, paraphrasing his iconic messages and stoking an electoral race that has his party on the ropes.

Taking advantage of the media coverage that the first refugee caravan had during the month of April - which largely disintegrated before it even reached the border - Trump has used Twitter to reverse the pressure and has made a collage of his favorite threats.

"Hard to believe that with thousands of people from south of the border, walking unimpeded toward our country in the form of large caravans, the Democrats won’t approve legislation that will allow laws for the protection of our country. Great Midterm issue for Republicans!" the president wrote on Twitter.

Another of his campaign successes has been the promise of a "strong hand" in international trade agreements, always arguing that "they take advantage of the United States." Just weeks after having signed an economic renegotiation with Canada and Mexico - his campaign was also based on criticism of the North American Free Trade Agreement (NAFTA) - now the U.S. president has threatened to cancel his new agreement if Mexico does not do something to stop the new caravan of refugees.

For the president, guilt is a powerful political weapon and, in the midst of despair, his verbiage has spread to the most sensitive aspects for still undecided voters before the midterm elections.

However, if his threats didn’t stop the will of those who insist on crossing the border, his new tantrum could instead give the last impulse of the race to the Democrats to save the country.