With the dramatic increase in asylum claims being made along Canada-U.S. border crossings, the UN Refugee Agency now says they are monitoring the situation on our borders.

But with the increased awareness there are also questions about how Canada vets the claimants.

Recent calls for a crackdown on the system are unnecessary given that all refugee claimants, regardless of where they 鈥渟how up鈥 along the border, are subject to extensive screening in Canada, says Sharryn Aiken, law professor at Queen鈥檚 University and an expert on immigration and refugee law.

Whether crossing an unguarded border or coming from overseas, no one gets a 鈥渇ree pass鈥 coming into Canada, Aiken said, because asylum-seekers aren鈥檛 allowed to pursue a refugee claim until a screening is completed.

How to check for security threats?

鈥淎n official with the Canadian Border Services Agency will meet with an individual, interview them, and use all the resources at their disposal, including extensive information-sharing networks that Canada has with the U.S., as well as other counterparts around the world, to figure out who the people are,鈥 Aiken said in an interview with CTV鈥檚 Your Morning on Friday.

鈥淥bviously, if they have identity documents, that work is facilitated, but even if someone shows up with nothing, their names are plugged into computers, Canada鈥檚 security intelligence office will often be involved, and people are screened to ensure that they don鈥檛 represent a threat to the country, either in terms of national security issues or in terms of serious criminality.鈥

Aiken said that even among those who are determined to be eligible, if information subsequently comes to light that suggests a mistake was made at any time, that matter can be reopened. 鈥淭he person can be subject to what鈥檚 called an admissibility hearing and indeed they can be precluded from pursuing asylum.鈥

Is Canada鈥檚 screening system modern?

The screening and claimant process in Canada is 鈥渨idely鈥 misunderstood, Aiken said.

鈥淚t鈥檚 not an old-fashioned system. It鈥檚 modernized, it鈥檚 computerized,鈥 she said, adding that if any 鈥渞ed flags pop up鈥 during the screening, Canadian officials have access to that information and can track it.

Where there鈥檚 doubt, she added, 鈥渙fficials have the authority to detain and indeed maintain the detention until they鈥檙e satisfied that someone does indeed pose no threat.鈥

How do they enter?

Aiken said that all refugee claimants that are crossing the border through Manitoba, whether at a port of entry or irregular crossing, are all 鈥渨alking into the arms of officials.鈥

鈥淚t鈥檚 not as though these individuals are somehow evading detection,鈥 she said. 鈥淭hey are willingly presenting themselves because they want to pursue asylum, and so officials are doing the screening work. 鈥

But she agrees with the call for resources to process the cases, 鈥渂ecause without the resources individuals will be left languishing for a very long time,鈥 as they wait for screening interviews to be completed.

So, is the influx of asylum-seekers currently putting a tax on our system?

鈥淚 think that it is, and I think the answer to that burden is to temporarily suspend the Safe Third Country Agreement, which will encourage people to present themselves at established ports of entry,鈥 Aiken said.

The terms of the Canada-U.S. treaty provide for temporary suspensions, Aiken said, meaning all Canada 鈥渉as to do is serve notice that it鈥檚 interested in a temporary suspension.鈥