The agency has submitted a proposal for collection of the details and says this will be an optional field on the form.
On arrival in the US, a non-US citizen has to fill out two forms - a non-immigrant visa waiver arrival/departure record (I-94W) and an arrival/departure record (I-94).
The question proposed to be added reads: "Please enter information associated with your online presence — Provider/Platform — Social media identifier."
The agency said in a notice on the US federal register that it had recently added questions asking applicants about countries they had visited on or after March 1, 2011; countries where they hold citizenship or are nationals and their Global Entry Numbers.
These were added after President Barack Obama signed into law the Visa Waiver Program Improvement and Terrorist Travel Prevention Act of 2015.
Every time there is a new question added to any of the forms, it requires additional staff and money to process the information received.
As far as the new proposal goes, the agency gave the following estimates:
Changes to form I-94 (arrival and departure record) would mean about eight minutes more spent on the form by each of the 4.3 million travellers with the cost associated being US$26.4 million. An additional 583,544 work hours were estimated to be needed to process the information.
Changes to the I-94 website would take about four minutes for 3.85 million travellers. No cost estimate was provided. An additional 254,679 work hours were estimated to be needed to process the information.
As far as form I-94W, the non-immigrant visa waiver arrival/departure form goes, the number of people estimated to be filling it was 941,291 with the cost to the US being US$5.64 million. An additional 251,325 work hours were estimated to be needed to process the information.
The agency estimated that more than 23 million would need to fill the additional details on the electronic system for travel authorisation (ESTA) website, with the cost to the US being US$265 million. The additional work hours required to process this information was estimated at 8,812,830.
Anyone who wishes to submit a comment about the proposal has until 22 August to do so.