How do the Canadian and American immigration systems stack up?

U.S. President Donald Trump is slamming a U.S. visa lottery program, saying he wants to see a move to a merit-based system.

It's not the first time the president has touted the potential of moving to a merit-based system like the one used in Canada. Under a merit-based system, would-be immigrants are awarded points for different skills and things like education and languages spoken.

Trump turned his attention to immigration after U.S. security officials confirmed the 29-year-old accused of killing eight people in Manhattan yesterday immigrated from Uzbekistan under something called the Diversity Visa Lottery Program.

But the visa lottery program isn't the only immigration program drawing the president's ire he also wants to put a stop to the chain migration program, which allows people with family connections to come to the U.S.

In a tweet on Wednesday, Trump decried chain migration, saying it "must end now!" "Some people come in, and they bring their whole family with them, who can be truly evil. NOT ACCEPTABLE!"

Want to know more about how the Canadian and U.S. systems compare? Check out reporter Matt Kwong's exploration of how the two systems stack up.