A senior Mexican delegation will start immigration talks in Washington, D.C., with Trump administration officials on Monday as President Trump Donald John TrumpBiden on Trump's refusal to commit to peaceful transfer of power: 'What country are we in?' Romney: 'Unthinkable and unacceptable' to not commit to peaceful transition of power Two Louisville police officers shot amid Breonna Taylor grand jury protests MORE's threat of tariffs looms, Reuters reported.

Talks will begin between Mexican Economy Secretary Graciela Márquez and U.S. Commerce Secretary Wilbur Ross Wilbur Louis RossTrump admin asks Supreme Court to fast-track excluding people in U.S. illegally from census Trump 'very happy' to allow TikTok to operate in US if security concerns resolved TikTok, WeChat to be banned Sunday from US app stores MORE and continue Wednesday between Foreign Minister Marcelo Ebrard and U.S. Secretary of State Mike Pompeo Michael (Mike) Richard PompeoTreasury sanctions individuals, groups tied to Russian malign influence activities Navalny released from hospital after suspected poisoning Overnight Defense: Pentagon redirects pandemic funding to defense contractors | US planning for full Afghanistan withdrawal by May | Anti-Trump GOP group puts ads in military papers MORE, according to the news service.

The Trump administration's proposed 5 percent tariff on Mexican goods is set to take effect June 10 and steadily increase until it reaches 25 percent, “unless and until Mexico substantially stops the illegal inflow of aliens coming through its territory,” according to a statement from the White House last Thursday.

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Trump, who will be London during the immigration talks, said on Sunday that he doesn't think "talking" is the answer.

"Mexico is sending a big delegation to talk about the Border. Problem is, they've been 'talking' for 25 years. We want action, not talk," Trump tweeted.

Mexico is sending a big delegation to talk about the Border. Problem is, they’ve been “talking” for 25 years. We want action, not talk. They could solve the Border Crisis in one day if they so desired. Otherwise, our companies and jobs are coming back to the USA! — Donald J. Trump (@realDonaldTrump) June 2, 2019

The proposed tariffs on Mexican imports could lead to the biggest tax hike on American consumers in nearly three decades, according to an analysis by the Tax Foundation.

Acting White House Chief of Staff Mick Mulvaney Mick MulvaneyOn The Money: House panel pulls Powell into partisan battles | New York considers hiking taxes on the rich | Treasury: Trump's payroll tax deferral won't hurt Social Security Blockchain trade group names Mick Mulvaney to board Mick Mulvaney to start hedge fund MORE said Sunday that Trump is "deadly serious" about following through on the tariffs.