That’s a wrap – thank you for reading the Need to Know blog today. These were some of the main stories:

• Rail unions withdraw partial work bans: Rail unions have withdrawn all their partial work bans against Sydney Trains and committed not to impose them again, potentially scuttling the NSW government’s case to terminate the long-running dispute and force it into arbitration.

• Meeting with Rubio signals US priority with Australia: Foreign Minister Penny Wong says it’s “been a great day” and she has had productive meetings on the first full day of the Trump administration.

• Tech leaders unite with Trump for AI project: President Donald Trump says world-leading technology giants will work together to form Stargate, which will invest $US500 billion ($797 billion) in artificial intelligence infrastructure in the United States.

• Man charged after alleged attempt to burn synagogue down: A man has been charged after he allegedly attempted to burn down a synagogue in Sydney’s inner west.

• Push for more information on AFP’s antisemitic foreign attack claims: Australians are entitled to more information, says opposition home affairs spokesman James Paterson, after the Australian Federal Police announced that Jewish Australians were potentially being targeted by malicious foreign organisations.

• Twenty-two states sue to stop Trump’s birthright citizenship order: Attorneys-general from 22 states sued President Donald Trump in two federal district courts on Tuesday to block an executive order that refuses to recognise as citizens the US-born children of immigrants in the country illegally.

• Trump to spend first full day firing people: The president is spending his first full day back in the White House meeting with congressional leaders, announcing an investment in artificial intelligence infrastructure and demonstrating one of his favoured expressions of power: firing people.