Four Democratic senators are calling on Federal Reserve Chair Kevin Warsh to disclose details of his conversations with President Donald Trump since taking office in May, amid concerns about the Fed's independence from political pressure. The demand, made in a letter from Chris Van Hollen, Jack Reed, Angela Alsobrooks, and Elizabeth Warren, states that effective monetary policy requires transparency and accountability, and that the Fed should release information about the discussions to demonstrate its independence from the White House. The issue has intensified after Warsh's public calendar for his first full month in office showed no talks or meetings with Trump, even though reports say the two spoke by phone several times, with Trump asking about economic views but not pressing for specific policies. Meanwhile, Trump continues to call for the Fed to cut interest rates, and the White House attempted this month to remove Fed Governor Lisa Cook from her position.