President Trump on Saturday called attention to the more than 20 states which have signaled resistance to his voter fraud commission's request to hand over publicly available voter roll data to the White House.

"Numerous states are refusing to give information to the very distinguished VOTER FRAUD PANEL. What are they trying to hide?" Trump tweeted Saturday morning.

Kris Kobach, vice chairman of the Presidential Advisory Commission on Election Integrity, who is also the Kansas secretary of state, sent a letter to all 50 secretary of states requesting the voter information on Wednesday.

Top officials in more than 20 states have since replied that they will fight the request and hand over only what is permissible under state law.

The voter fraud commission was created in May after Trump claimed, without evidence, that millions of illegal immigrants cast votes for Hillary Clinton in the 2016 election and prevented him from winning the popular vote.

The commission is led by Vice President Mike Pence and Kobach and is expected to meet on July 19, five days after the requested voter information is due to the commission.