"I see no evidence of the investigation in any way impeding the important work that we are doing", McMaster told Fox News host Bret Baier at the Reagan National Defense Forum at the Ronald Reagan Presidential Library in Simi Valley, Calif.
Pyongyang has been under United Nations sanctions since 2006 over its ballistic missiles and nuclear programs.
On Saturday Russia's Foreign Affairs Minister Sergei Lavrov reiterated his country's condemnation of the missile test.
Haley called on all countries Wednesday to cut ties to North Korea.
Commenting that the planned manoeuvre would be the "largest-ever" such drill, a spokesman for the North's Ministry of Foreign Affairs said in a statement Saturday: "The Trump team is begging for nuclear war by staging an extremely risky nuclear gamble on the Korean peninsula".
North Korean officials made similar comments last month.
It is likely the ballistic missile, fired higher than any previous North Korean missile, broke up as it re-entered Earth's atmosphere, the official said.
"If somebody is very eager to use force to wipe out North Korea, as the United States' U.N. envoy said, it was a very bloodthirsty tirade", Russian news agencies quoted Lavrov as saying at a Rome news conference with his Italian counterpart.
"Long Live the General Kim Jong-un who has brought us the great historic cause of nuclear statehood", another banner read. The United States has 28,500 troops in South Korea as a legacy of the 1950-53 Korean War.
It's a risky world and as you look around and see there are a ton of hot spots, this next question is politically sensitive but you said everything was open when we started this thing, does an event like the indictment, foreign policy or national security impact, in other words, do foreign allies get rattled by it, do adversaries get rattled by it, does it somehow constrain the Trump administration foreign policy?. "U.N. Security Council measures".
The ICBM Hwasong-15 type weaponry system used in Wednesday's test is an intercontinental ballistic rocket tipped with super-large heavy warhead capable of striking the whole mainland of the USA, the North said.
I gave this talk about strategic confidence, it's really an element of reclaiming our strategic confidence, is having confidence in what unifies us as Americans.
Nassar victims demand answers from Michigan State University, USA Gymnastics
Separately, Nassar is charged with similar crimes in Eaton County, the location of an elite gymnastics club. He is facing similar charges in the MI area, which have been filed by more than 125 women and girls.