Donald Trump Won't Rule Out Curbing Visas to US in Wake of San Bernardino Shooting "I don’t rule out anything,” the GOP presidential candidate said.

 -- GOP presidential candidate Donald Trump said he wouldn’t rule out new restrictions on visas to the U.S. after it has come to light that one of the alleged San Bernardino attackers gained entry to the U.S. through using a K-1 fiance visa.

"I don’t rule out anything,” Trump told reporters today in a Spencer, Iowa. “If people come in and they blow up people and they shoot people and they kill people, I don’t rule out anything.”

Trump did not elaborate except to say that he’ll have a statement coming in the next week on the topic.

"We’re going to have to start looking at people very closely because we cannot allow this to happen in our country, we just can’t, so we’ll start looking at people very closely,” Trump said.

Trump called the alleged San Bernardino attackers “chickens***,” concluding they didn’t actually want to die since they fled the scene, and made the case -- as he did after the Paris attacks -- that the situation would have turned out differently had some of the victims had guns.

“If you look at Paris, they didn't have guns and they were slaughtered. If you look at what happened in California, they didn't have guns, they were slaughtered,” Trump said. “So, I think it would have been a lot better if they had guns in that room, somebody to protect. They could have protected themselves if they had guns."

Earlier this week, Trump called for targeting the families of terrorists in addition to the terrorist themselves, telling FOX News, “you have to take out their families.”

When asked Friday whether his call to target the families of terrorists includes children, Trump declined to give a direct answer and said he would comment on a later date.

"I will comment on that at a little bit later date but we have to start looking at families now,” Trump said. “We have to look at them very tough. Generally speaking, the wives know what’s going on.”

In the case of San Bernardino, Trump said he believes the mother, sister and “anyone” who went into the alleged shooters' house knew that the couple was planning an attack.

"I think the mother knew what was going on. She went into the apartment. Anyone that went into that apartment knew what was going on. They didn’t tell the authorities,” Trump said. “They knew what was going on. The mother knew, the sister interviewed, I think that she knew. We’d better get a little tough and a little smart or we’re in trouble.”

Trump did not respond to a shouted question about what he thought should happen to the sister of the alleged killer, whom he accused of knowing what was going on.

Asked how he would prevent innocent civilians from being killed when targeting terrorists, Trump said that innocent civilians aren’t being targeted.

"Innocent civilians aren’t being targeted, they’re the ones who got killed. Innocent people are being killed because we’re trying to be so politically correct. Not going to happen anymore,” he said.