Although he says it's too early to know if Congress should consider impeachment proceedings against President Donald Trump, New York Congressman Paul Tonko, a Democrat from the 20th district, says he is joining the call for an independent investigation into the White House's firing of FBI Director James Comey and President Trump's disclosure of intelligence to emissaries from Russia. The New York Times reported that before firing Comey, the president had asked him to halt an investigation into embattled then-national security adviser Michael Flynn."The fundamental responsibility here is to protect the Constitution," Tonko said by phone Wednesday, "and to embrace our responsibilities for oversight."