With his numbers sliding in polls, Donald Trump is turning to his most popular point on contention – the US immigration policy. During a rally in New Mexico, the Republican presidential candidate told supporters that if Hillary Clinton was elected, she would create an "open borders" policy that would allow "650 million people" to enter the US within a week.

"You know, it would be much easier working for Obama or working for crooked Hillary because frankly when you're working for Hillary, she wants to let people just pour in," Trump said, while speaking at an airplane hangar in Albuquerque on 30 October.

The president hopeful added that Clinton would put America in danger with her softer immigration policies. "You could have 650 million people pour in and we do nothing about it. Think of it, that's what could happen," he said.

"You triple the size of our country in one week. Once you lose control of your borders you have no country."

The 70-year-old billionaire went on to defend his support of waterboarding terrorists, especially those connected to Islamic State (Isis). "These savages are chopping off heads, drowning people. This is medieval times and then we can't do waterboarding? 'It's far too tough'," he said of the banned torture practice.

"We have to be tough and we have to be smart. And we have to be in some cases pretty vicious I have to tell you."

Donald Trump
Republican presidential nominee Donald Trump speaks at an airport campaign rally in Albuquerque REUTERS/Carlo Allegri

With just nine days to go for the 8 November elections, Trump signalled that he plans to go on a major offensive in the final week of his campaigning. Just hours before his Albuquerque visit, the candidate told supporters in Colorado that he continued to believe that the election process was rigged. He urged voters to skip the option to vote by mail and instead make their way to polling spots and request new ballots.