Rauner spokeswoman Rachel Bold says the governor will veto the measure Tuesday, a week before the state's primary election in which the Republican faces a challenge from state Rep. Jeanne Ives.
The governor said during a radio interview the bill was "just not right".
I'm going to veto that bill. Paul Bauer and the mass shooting at a high school in Parkland, Fla. "It's unnecessary, burdensome regulation".
Bruce Rauner (R) will veto legislation that would have required gun shops in his state to obtain licenses. Under the law, store owners would also be obligated to train employees to conduct background checks and spot potential straw purchasers.
Jeanne Ives, who is intelligent and experienced, is opposing Gov. Rauner in the Republican primary.More news: Google to ban cryptocurrency ads
"Rauner said the federal government already regulates gun dealers, making state regulations redundant". This is about his primary election and not his primary responsibility as governor.
And at his side was Police Superintendent Eddie Johnson who said, "It baffles me, it really does, it baffles me that something as simple as this, requiring gun shops to be accountable, is hard to do". The mayor said Rauner "put his primary election ahead of his primary responsibility to protect the safety of the people of Chicago and IL". The governor's decision was cruel, it was cold and it was calculated to benefit his own politics at the expense of public safety.
On Monday, Rauner said he wanted to work with the Democrat-controlled General Assembly on four goals relating to firearms: banning bump stocks, improving school safety, keeping guns out of the hands of criminals and the mentally ill, and giving better support to police officers.
A number of gun control bills are now making their way through the state legislature.