The White House did not immediately release any more information about his condition.
Kudlow's friend Stephen Moore, of the Heritage Foundation, toldPolitico that he believes he will be okay.
Donald Trump Says That Melania Had a ‘Big Operation’
For the third time since her 25 days out of the spotlight, Melania Trump resurfaced at a high profile event on June 10. She participated Sunday without Trump; he's in Singapore preparing for his meeting Tuesday with North Korea's leader.
Kudlow, a Fairfield County homeowner who serves as Trump's chief economic adviser, blasted Trudeau after the prime minister clashed with Trump during the G-7 summit in Canada.
Before joining the White House, Kudlow vocally opposed the protectionist trade agenda that Trump promoted, but he has become a forceful advocate for the president's policies since joining the administration. He replaced Gary Cohn, who resigned after losing his battle against imposing tariffs on steel and aluminum imports.
Trump's choice of Kudlow to be his top economic aide elevated the influence of a longtime fixture on the business news network CNBC. The month he was tapped for the White House job, he co-authored an article that argued such tariffs were akin to sanctions on the United States itself.
On trade, it's Trump who's retaliating
Navarro later clarified that his comments were "the sentiment that was on Air Force One after that". He says Canada won't be pushed around over the tariffs and we are reasonable people.
Kilauea has swallowed 600 homes in unprecedented eruption
Most of Hawaii Volcanoes National Park remains closed due to persistent earthquakes and eruptions of corrosive volcanic ash. County officials say there are 279 homes between the two coastal communities, and most are feared to be destroyed.
Hilarious Tweets About IHOP Changing Their Name to IHOB
While the reviews still appear to be mixed, IHOP's marketing team definitely did their job and got people talking about it. Whatabuger also had a great response saying: "As much as we love our pancakes, we'd never change our name to Whatapancake".
Neymar mocks Austria's 'UFC' tactics after Brazil win
He would not confirm, however, that the same side would start Brazil's opening World Cup game against Switzerland on 17 June. Once they touched down, a track suited Chechen leader Ramzan Kadyrov was among the first to greet Salah.