Are Republican senators preparing to turn on Trump?

President Trump's vow to apply tariffs on all Mexican goods might be the last straw. [View in browser]( [Image](  JUNE 4, 2019 Are Republican senators preparing to turn on President Donald Trump's tariffs?  More than half a dozen GOP members [raised concerns]( or asked questions at a Tuesday policy lunch attended by Republican senators and Trump administration lawyers, according to multiple sources, as well as a senator who attended.  President Trump has vowed to apply tariffs on all Mexican goods next week and increase the rate to 25 percent in coming months if Mexico does not substantially halt illegal immigration across the U.S.-Mexican border.  Senate Majority Leader Mitch McConnell acknowledged [his party's opposition]( to Trump's plan. "There is not much support in my conference for tariffs, that's for sure," he said. Trump, however, said that the GOP would be "foolish" to try to block his plan.  "I don't think they will do that," Trump said during a news conference with British Prime Minister Theresa May in London. "  Two Republican Senate sources told NBC News that Republican lawmakers and the business community are worried that the White House hasn't fully thought through the possible [economic consequences]( of the proposed tariffs.  "There’s a lot of questions about it," Senate Majority Whip John Thune said earlier Tuesday. "Our members have a lot of concerns." [Image] In the latest in a bitter back-and-forth between the White House and Capitol Hill, [the White House directed former Trump administration officials Hope Hicks and Annie Donaldson not to hand over any documents]( to the House Judiciary Committee related to their time at the White House, two sources told NBC News.  Tuesday was the deadline for Hicks and Donaldson to turn over the documents.  In a statement, Judiciary Chairman Jerrold Nadler said the White House “has no lawful basis for preventing these witnesses from complying with our request."   The subpoenas, issued last month, sought testimony and documents related to the panel's investigation into obstruction of justice, corruption and other potential abuses of power by Trump and members of his administration.  ICYMI: Videos from MSNBC Today [Image]( [Republican senators turn on Trump over Mexico tariffs]( Republican senators signaled Tuesday that President Trump doesn't have the political backing to impose tariffs on Mexican goods, and that they could deal him an embarrassing rebuke if he moves forward. (Hardball) [Facebook]( [Twitter]( [Image](  [Trump mistakes thousands of London protesters for well-wishers]( The president claimed that thousands of people lined the streets of London to cheer for him and nobody protested— but the reality was the other way around. (All In) [Facebook]( [Twitter]( [Image](  [The White House steps up its stonewalling]( The White House ordered former staffers Hope Hicks and Annie Donaldson to refuse to comply with congressional subpoenas, as House Democrats call on Nixon whistle-blower John Dean to testify. (Deadline: White House) [Facebook]( [Twitter]( More Videos - [Another day, another impeachable offense (Last Word)]( - [Democrats unanimous in passing bill to protect Dreamers (Rachel Maddow)]( - [Will Trump's old campaign boss Manafort end up in NYC's most notorious prison? (11th Hour)]( - [During press conference with May, Trump says Brexit should and will happen (Hallie Jackson)]( - [What happens if Trump’s Mexico tariff goes into effect? (Velshi & Ruhle)]( - [Photos tell a tale of two hearings on women's reproductive health (Rachel Maddow)]( - [Chinese dissidents find ways to keep Tiananmen memory alive (MTP Daily)]( - [Doctor defies FDA, prescribes abortion pills in U.S. over internet (Velshi & Ruhle)]( - [Virginia Democrats pressure GOP for gun safety after shooting (Rachel Maddow)]( - [Donald Trump’s overseas protest delusion (Deadline: White House)]( [Latest from NBC News]( Quote of the Day [“Impeachment is sort of the 'atomic bomb' of political tools, and you've got to be thoughtful and careful about how you use it.”]( — Rep. Jim Himes ([Video]() Opinion and Features [OPINION](: China doesn't mark the Tiananmen Square massacre's anniversary. But the world should. China’s officials have used every tool at their disposal to muzzle criticism of the crimes the country committed at Tiananmen Square on June 4, 1989, but on the 30th anniversary of the massacre, the events the government has tried for decades to erase from the pages of history are deservedly back in the spotlight. by [Frida Ghitis](.  [OPINION](: Ava DuVernay's harrowing Central Park Five Netflix series is a national call to action. DuVernay portrays the all-encompassing and emotionally exhausting struggle for justice. But there are no happy endings here. by [Ronda Racha Penrice](. What to watch Wednesday: President Trump will attend a ceremony with the Queen in Portsmouth, England to mark the 75th anniversary of the Normandy Landings.  Wednesday at 8 p.m. ET, Chris Hayes moderates a live town hall with Elizabeth Warren in Fort Wayne, Indiana. Sen. Warren will speak directly to voters and take their questions on how she plans to win back the industrial Midwest. This newsletter was prepped for you by Stephanie Haberman and Sam Go.  Tell us what you think of the news and [drop us an e-mail](mailto:msnbc.digital.editors@nbcuni.com).  Have you read the [Mueller report](? Here's [a link](.  Were you forwarded this email from a friend?  [Subscribe here](. [pride 50](  Follow MSNBC [Facebook]( [Twitter]( [Instagram]( [YouTube]( [LinkedIn]( Download the NBC News Mobile App and watch MSNBC [Image] [Image] [Privacy]( [Unsubscribe](listvar=sub_daily)