President Donald Trump remarked "That's big stuff," when talking about the memorandum for a plan to defeat ISIS. | Getty Trump signs 3 executive actions on NSC, lobbying and ISIS

President Donald Trump on Saturday signed three new executive actions to reorganize the National Security Council, impose a five-year ban on lobbying for administration appointees and a lifetime ban on lobbying the government for other countries, and order the Department of Defense to come up with a plan within 30 days to defeat ISIS.

Two of the actions — on the NSC and ISIS — were memoranda; the other was an executive order. Trump was surrounded by aides including senior advisers Kellyanne Conway and Steve Bannon, and White House counselor Don McGahn.

He remarked "That's big stuff," when talking about the memorandum for a plan to defeat ISIS. The president said the NSC reorganization represents "a lot of additional safety. People have been talking about this for a long time, like many years," according to a pool report.

As part of the first action, the National Security Council will be rearranged to be "more responsive to digital threats," according to a senior administration official.

"It will outline new organizational structures to make the NSC more adaptive to the modern threats that we face," the official said before the signing.

As part of the change, Trump's chief strategist, Steve Bannon, will be present at NSC meetings on the principals committee with senior security officials. Political staffers are traditionally not present at these meetings.

Following up on a campaign promise to "drain the swamp," appointees in the Trump administration will be banned from lobbying for five years after leaving government.

There will be a lifetime ban on lobbying the government for a foreign government. It's unclear how the administration will enforce the ban after Trump has left office.

The ban does not extend to former lobbyists.

"If you want to come work in this administration, you can’t seek to profit from this administration," the official said.

The final action was a request to the Joint Chiefs of Staff to return in 30 days with a plan to defeat ISIS.

"That ... would represent a profound statement on the part of the United States that we are committed to ending this atrocity," the official said. "The intended results are saving an unknowably large amount of people on a humanitarian level."

Per a pool report, after signing the documents, Trump was asked about Friday's immigration executive order. “It’s not a Muslim ban, but we were totally prepared. It’s working out very nicely. You see it at the airports, you see it all over," he said.

The official said that the process of coming out with the rapid succession of executive orders during the past week involved a "multilayered and complex" process that involved input from more than 100 individuals.