A Gallup poll released Monday showed President TrumpDonald John TrumpGrassley: Dems 'withheld information' on new Kavanaugh allegation Health advocates decry funding transfer over migrant children Groups plan mass walkout in support of Kavanaugh accuser MORE earning his highest approval rating since shortly after he took office, even as his administration faces growing criticism over its immigration policies.

The Gallup poll found 45 percent of Americans approve of Trump’s job performance as of Sunday, while 50 percent disapprove. The approval number matches Trump’s highest to date from Gallup. He previously received the same rating for the week ending on Jan. 29, 2017.

Trump’s current approval rating rose 3 percentage points since June 10.

In the week in between, Trump met with North Korean leader Kim Jong Un, marking the first summit between sitting leaders of the two countries.

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After hours of discussions, Trump and Kim signed an agreement committing the United States to unspecified “security guarantees” in exchange for a denuclearized Korean Peninsula. The document also lacked details on the timeline or nature of denuclearization.

Trump has touted the deal as a sweeping success, and claimed North Korea no longer poses a nuclear threat to the world.

While some U.S. and foreign officials have praised the meeting as a good first step, others have lamented that Trump offered several concessions while receiving little in return. The president has also received criticism for heaping praise on Kim, who is accused of committing numerous human rights violations.

In recent days, the president has faced mounting scrutiny over his administration’s policy of separating migrant families at the border.

Democrats and Republicans have called for an end to the policy, which is a result of an order enacted by Attorney General Jeff SessionsJefferson (Jeff) Beauregard SessionsTrump distances himself from Rosenstein by saying Sessions hired him Gowdy: Declassified documents unlikely to change anyone's mind on Russia investigation Pompeo on Rosenstein bombshell: Maybe you just ought to find something else to do if you can't be on the team MORE earlier this year.

Trump on Monday doubled down on the practice, pinning the blame on Democrats for failing to negotiate immigration policy changes.

“The United States will not be a migrant camp and it will not be a refugee holding facility — it won’t be,” Trump said. "Not on my watch."

The Gallup poll releases presidential approval ratings on a weekly basis. The poll surveys 1,500 adults, and has a margin of error of 3 percentage points.