Federal officials said on Sunday another group of Syrian refugees had turned themselves in at the US-Mexico border.
The Department of Homeland Security confirmed that the group identified themselves to border agents in the South Texas town of Laredo on Friday. It said the group consisted of a family of three along with two other men.
They were held to check their identities against national security databases and then turned over to US Immigration and Customs Enforcement for temporary detention.
The refugees’ arrival came after two Syrian families identified themselves on Tuesday to border officials in Laredo. In each instance, the men were taken to one detention facility and the women and children to another.
Hundreds of thousands of people have fled Syria to escape the war, most of them to Europe. The refugee crisis has also affected the US, however.
In the aftermath of terror attacks in Paris which killed 130 people and injured hundreds more, and were claimed by the Islamic State militant group which has strongholds in Syria and Iraq, Republican presidential candidates this week led calls for all Syrian refugees to be barred from entry to the US, or for only Christian refugees to be allowed in.
On Thursday the House of Representatives passed a bill strengthening barriers against refugees from Syria and Iraq. Barack Obama has said he will veto it.