Top Democrats called on the US attorney-general to provide Congress with the full Mueller report into Russian meddling in the 2016 election, just hours after Donald Trump and his allies moved to exact reprisals against those who backed the probe.

The Democratic heads of six committees in the House of Representatives on Monday wrote to attorney-general William Barr to demand that he provide a copy of the report written by special counsel Robert Mueller by April 2. They also asked for the underlying documents that were used to compile the report on the 22-month investigation.

“Your four-page summary of the special counsel’s review is not sufficient for Congress, as a coequal branch of government, to perform [its] critical work,” said the six House Democrats.