Trump news: Don Jr ordered to testify to Senate over Russia contacts, as president laughs about shooting migrants at Florida rally

Trump ratcheted-up his criticism of China in Florida last night ahead of further trade talks, accusing the rival superpower of "breaking the deal".

"I just announced that we’ll increase tariffs on China and we won’t back down until China stops cheating our workers and stealing our jobs, and that’s what’s going to happen, otherwise we don’t have to do business with them," the president told the cheering crowd.

"They broke the deal. They can’t do that. So they’ll be paying. If we don’t make the deal, nothing wrong with taking in more than $100 billion a year."

The US is "the piggy bank everyone wants to rob", he said.

The president was referring to the $200bn (£153bn) increase in tariffs on Chinese goods (a rise from from 10 percent to 25 percent) announced by the US Trade Representative's office on Friday, a move that sent Chinese stock markets tumbling.

Beijing has since threatened retaliation.

"The Chinese side deeply regrets that if the US tariff measures are implemented, China will have to take necessary countermeasures,” the country's commerce ministry said.

Here's Chris Baynes with more.

Donald Trump ordered new sanctions against Iran on Wednesday hours after Tehran said it was relaxing some restrictions on its nuclear programme.

Adam Forrest has more.

This is interesting. Democrats in the House of Representatives yesterday withdrew two bills from the floor they had planned to vote on after Trump tweeted his opposition, fearing his post could influence the outcome.

Trump urged Republicans to vote against a measure that would end a legal challenge to the planned construction of a casino on the Mashpee Wampanoag tribe’s reservation in Massachusetts.

A second bill pulled from the schedule would have affirmed the federal government’s right to place land into a trust for the tribe’s benefit.

State senator and 2020 contender Elizabeth Warren - whom Trump loves to ridicule with the nickname "Pocahontas", satirising her claim to Native American heritage - has supported the tribe in the dispute.

  “The president sent out a tweet, which was silly - I'm trying to use the kind of words I can use - it was the wrong thing to do,” House majority leader Steny Hoyer said, explaining the decision.

But why would Trump chose to intervene in this local squabble, you ask?

Perhaps it has something to do with the fact that the case has been the subject of lobbying by a Cove Strategies representative named Matthew Schlapp, husband of White House director of strategic communications Mercedes Schlapp, a connection that appears to suggest a clear conflict of interest in the president's tweet.

The casino set to go up on the reservation would be built by Malaysian gaming conglomerate Genting while Herr Schlapp's firm represents American rival Twin River Management Group, who just might like to see off new competition for their own resorts in nearby Rhode Island.

“With this tweet, President Trump is not only allowing special interest lobbyists like Matt Schlapp - who happens to be married to his staffer - to direct federal policy, but reinforcing the federal government’s ugly history of oppression towards Indian tribes,” Democratic congressman Ruben Gallego said.

Speaking of Warren, her attempt to go after Democratic 2020 rival Joe Biden over his fundraising tactics has ended in embarrassment.

Don Jr isn't the only Trump offspring in the spotlight today.

Former chief of staff John Kelly has spoken of his frustration in dealing with Ivanka and her husband Jared Kushner during his tenure at the White House, characterising them as an obstacle to be "dealt with" at all times in an interview with Bloomberg's David Rubenstein Show.

And now to what is unquestionably my favourite story of the day.

Senate majority leader Mitch McConnell is selling "Cocaine Mitch" T-shirts in support of his re-election campaign. Yours for just $35.

McConnell is embracing a nickname given to him in 2018 by failed West Virginia Senate candidate Don Blankenship, who said “one of my goals as US senator will be to ditch Cocaine Mitch.” 

The name, Blankenship explains, relates to his former opponent's father-in-law, a shipping magnate whose company was implicated in alleged coke smuggling. 

Not to be a killjoy but should this veteran lawmaker really be making light of the war on drugs at a time when an administration he routinely apologises for stands accused of demonising asylum seekers desperate to escape gang violence at the hands of narcotics traffickers striving to meet American demand?

Billy Bush, the man last heard from opposite Donald Trump in the notorious Access Hollywood tape, is returning to television.

The tape saw Trump, on the set of soap opera Days of Our Lives, discussing groping women.

"I don't even wait. And when you're a star, they let you do it. You can do anything. Grab them by the p****. You can do anything," the president of the United States famously told Bush in a clip widely circulated ahead of the 2016 election, which, remarkably, he still won.

Bush was subsequently sacked from NBC's Today programme for his part in an incident dismissed by red-faced Republicans as "locker room talk".

Here's more from Jack Shepherd.

Meng Wanzhou, chief financial officer of Chinese electronics giant Huawei, has cited comments by President Trump as a reason she cannot be extradited to the United States from Canada.

Wanzhou was arrested in December on charges related to Iran sanctions violations and remains under house arrest in Vancouver.

Trump suggested at the time he would be open to using the pending case as a negotiating tactic in trade talks with China, saying he would “intervene” if he decided it was necessary.

Wanzhou’s lawyers now argue his comments disqualify the United States from pursuing the matter. Her spokesman Benjamin Howes said on Wednesday there are “political factors” behind the arrest, adding Wanzhou’s rights have been violated.

Trump is hosting the Boston Red Sox this afternoon but not all the team's players will be in attendance, it appears.

Over on this side of the Atlantic to visit Westminster, US secretary of state Mike Pompeo has called Labour Party leader Jeremy Corbyn "disgusting" over his support for Nicolas Maduro in Venezuela.

Here's Ben Kentish with more.