No 10 says the PM shares the public's "frustration" at Parliament's "failure to take a decision".
The US president's son, who holds no political position, says Mrs May should have listened to his father.
The new Walford was meant to be finished in 2018, but the target is now 2023 and it will cost £27m more.
The party chairman responds to Islamophobia claims, saying swift action is taken on complaints.
Labour MPs vote to remove independent MPs Ian Austin and Mike Gapes on a three-line whip.