A committee that President Donald Trump convened to investigate voter fraud has begun asking election officials in certain states for registered voters names and personal information.

The commission, which is formally charged with investigating election integrity, sent a letter to election officials on Wednesday. Members asked officials to provide publicly available voter roll data, including the full first and last names of all registrants, middle names or initials if available, addresses, dates of birth, political party (if recorded in your state), last four digits of social security number if available, voter history (elections voted in) from 2006 onward, active/inactive status, cancelled status, information regarding any felony convictions, information regarding voter registration in another state, information regarding military status, and overseas citizen information.

The letter also asks election officials a series of questions, including what changes they would make to enhance the integrity of federal elections and how the panel can support local officials to improve election security. The letter, which makes no specific reference to Russian hacking in the 2016 election, also asks states to provide instances of voter fraud and convictions of election-related crimes since 2000.

Voting advocates are closely watching the commission, which had its first conference call on Wednesday to work out logistics, because they say the group is laying the groundwork for more restrictive voting laws. Notably, the commission is also making recommendations for preventing voter intimidation and disenfranchisement something not specifically outlined in the executive order creating the commission.

Vanita Gupta, the former head of the Justice Departments Civil Rights Division under President Barack Obama , said the letter made it clear the commission was pursuing voter suppression.

Trump has claimed repeatedly, without evidence, that millions of people voted illegally in the 2016 election. Kris Kobach, Kansas secretary of state and vice chairman of the committee, has a history of exaggerating voter fraud and pushing laws that make it more difficult to vote.

Studies have shown that voter fraud is not a widespread problem .