A few minutes back, Trump wandered a little close to Clinton as she answered an audience member's question. It didn't go unnoticed...

Clinton calls out Trump for denying his support for the war in Iraq for the 11th or 12th time.

Trump immediately interrupts that it has never been proven and that he was always against the war in Iraq. He keeps insisting the moderators favour the Democratic candidate.

He then criticises Raddatz for letting Clinton speak for 25 seconds more than she was allotted,  before insisting that he needed to respond. 

Raddatz asks Clinton: "We know you want tougher vetting, why take the risk of having more refugees come into the country? 

She says "I will not let anyone come into our country who poses a risk to us." 

But adds the US has an important role: 

"There are children suffering in this catastrophic war, largely I believe because of Russian aggression, and we need to do our part."

She criticises Trump's plan for extreme vetting, noting that the US is a country founded on religious freedom. 

Clinton: "What Donald Trump says about Muslims is used to recruit fighters because they want to create a war between us."

Trump: "We have many criminal illegal aliens... Hillary Clinton, when she was secretary of state, said, 'that's ok'"

Trump speaks about the Muslim family of a dead Iraq war veteran he had a spat with on Twitter: "Captain Khan is an American hero... if I were president at the time he'd be alive today." 

"I would not have had our people in Iraq, Iraq was a disaster," he said.

On his proposed Muslim ban he says: "This is the greatest Trojan horse of our time. I don't want to have hundreds of thousands of people coming in from Syria when we know nothing about their values, nothing about their love for our country."

He calls it "extreme vetting".

Claim: Donald Trump says Canada's health care system, which he says is similar to the Afordable Care Act, known as Obamacare, is beset by delays.

Reality Check verdict: The number of Canadians who travelled abroad in 2014 to receive non-emergency medical treatment increased 25% from 2013, according to the Fraser Institute, a Canadian independent research and education organization. This suggests the health care system could not cope with needs of many Canadians. But there are several key differences between the two systems - and there is wide gulf in access to care in the US.

Clinton takes a seat, appearing calm and composed, as Trump continues to pace about the floor, using his hands while responding and raising his voice.

Is she trying to strike a contrast with her rival? 

"How will you respond to people like me being labelled a threat to the nation?" a woman in the crowd asks.

Trump says: 'Muslims have to report it when they see hate going on. Muslims have to report the problems when they see them. If they don't do that it's a very difficult situation for our country. She (Clinton) won't even use the word (radical Islamic terrorism)."

Image source, AP

Bill Clinton criticised Obamacare earlier this week, calling it "the craziest thing in the world" due to the rising costs.

Clinton is clarifying what he meant by that. 

"Twenty million people now have health insurance," Clinton says, accusing Trump of wanting to "rip up the plan" and return the healthcare system to the insurance companies.

Claim: Donald Trump claims Hillary Clinton “acid washed” 33,000 personal emails to delete them, something he said was an "expensive process".

Reality Check verdict: The FBI said Clinton’s team used a free software programme called BleachBit, No chemicals were used. When he first made this claim, Trump's campaign said that he did not literally mean "acid washed", adding that it was a play on words and reference to a joke made by Clinton about "wiping" her email server with a cloth. BleachBit debunked Trump’s claim on its website, external saying the software is not "very expensive," adding that it is completely free of charge.

Here's that shot of Bill Clinton and Melania Trump greeting each other before the debate.

"It's only getting worse," he says, adding that it will "implode by itself" in 2017. 

He said it's far too expensive and "will never work".

He said we have to repeal it and replace it with something much better that works. 

"Obamacare is a total disaster," he says again. 

"Right now we are at 90% healthcare coverage," Clinton says about the record coverage set during the Obama administration.

"I want us to get to 100%", she continues.

"Obamacare will never work. Its very bad health insurance," Trump says, insisting that it's too expensive.

Clinton calls reining in the cost of the Affordable Care Act the highest priority of the next president. She "agrees" that premiums have gotten too high.

She adds she wants to save what works with Obamacare, but warns repealing it wholesale would lose all those benefits that came with the new healthcare system.