Former American President, Barrack Obama is angry with President Donald Trump.

You see, when Obama was president, he made a rule that allowed immigrants who were less than 18 years old, to study and even work in America, if they entered the country without a visa.

An estimated 800,000 people now benefit from the programme.

But President Trump called the policy illegal and on Tuesday, scrapped it.

And Obama is angry, very angry.

Reacting to President Trump’s move, Obama called the decision "wrong," "self-defeating" and "cruel".

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"Let's be clear, the action taken today isn't required legally. It's a political decision, and a moral question," Obama said.

Many political, religious groups and business leaders have also condemned the decision.

By that decision, the young immigrants who are popularly called "Dreamers", will have somewhere between 6 and around 24 months before they become illegal and subject to potential deportation.

Trump had argued that the amnesty introduced by former President Obama in 2012 was an unconstitutional overreach of presidential powers and would likely be struck down by the courts eventually.

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