Justin Amash became the first Congressman of the Republic to call for impeachment by President Donald Trump.
He said Trump was "engaged in specific actions" that "meet the impeachment frontier."
Amas accused Attorney General William Barr of reminding the public of the findings of Robert Mueller's Special Counsel by Russian disruption.
Mr Mueller's report found no criminal conspiracy between the 201
However it finds 10 instances where Mr Trump probably attempted to impede the investigation.
Mr Amash, a representative for Michigan, made comments on Saturday on Twitter.
He told his followers that "some members of Congress even read the report of Mueller "and claimed that they made their minds based on" partisan affiliation. "
Mr Amash Rashida Tlaib, a democratically appointed parliamentary in Michigan, requested Mr Amash a" cosponsor "resolution of the impeachment investigation.
- Eight new things in Mueller's report
- Pelosi reports the lawyer's general lie
The 448 page report includes large swathes of reductions and a subpoena requesting its full version was released .
Many Democrats including Elizabeth Warren called for impeachment by Mr Trump.
Following the release of the report, he said: "The severity of this wrong conduct requires that elected officials on both sides set aside political considerations and make their constitutional duty. "
However, Catalan Leader Leader Steny Hoyer and House Speaker Nancy Pelosi warned against it.
Mr Hoyer told CNN that impeachment would not be "worthwhile". He said: "Very openly, there is an election within 18 months and the Americans will make a judgment."
Nancy Pelosi told the Washington Post that impeaching Mr Trump was "not worth it."