Donald Trump

Updated 3:34 p.m. ET

The Trump administration has escalated its fight with California over environmental regulations.

Environmental Protection Agency Administrator Andrew Wheeler sent a letter Monday to the California Air Resources Board threatening to withdraw billions of dollars in federal highway money unless the state clears a backlog of air pollution control plans.

Updated at 3:43 p.m. ET

Former Vice President Joe Biden called for President Trump's impeachment unless the White House complies with congressional requests for information about a call the president made to a Ukrainian leader.

"We have a president who believes there is no limit to his power," Biden said. "We have a president who believes he can do anything and get away with it. We have a president who believes he is above the law."

Updated at 12:30 p.m. ET

At the U.N. General Assembly in New York on Tuesday, President Trump told world leaders to reject "globalism" and to look out for the interests of their own countries first.

"The future does not belong to globalists; it belongs to patriots," Trump said.

Tuesday marked Trump's third address to the General Assembly as president. As he has done in the past, Trump used his remarks to the international organization to make the case for his "America first" style of diplomacy that puts nationalism ahead of multilateral efforts.

Updated on Oct. 2 at 11:45 a.m. ET

In a July 25 conversation with Ukrainian President Volodymyr Zelenskiy, President Trump asked for an investigation of former Vice President Joe Biden and his son Hunter Biden for their activities in Ukraine several years ago.

President Trump's depiction of urban life in America is often grim, and the tension between the president and big city mayors is often filled with name-calling and lawsuits. For many mayors who end up in the president's crosshairs, it's a balancing act as they try to determine how to ward off criticism, as well as Trump administration policies they think may be harmful, while not jeopardizing federal funds earmarked for city projects.

The topic of impeachment is back and hotter than ever in Washington. But is it back by popular demand? Will the issue simmer into the fall, or will the heat dissipate in the days ahead?

More Democrats than ever — a majority — now favor opening formal proceedings to remove President Trump from office. More joined the chorus over the weekend after reports suggested Trump pressured an ally to support a certain line of attack on Democratic presidential candidate Joe Biden.

But the fever for impeachment has yet to be felt by much of the public at large.

The Trump administration will no longer allow migrant families apprehended at the border to enter the U.S. under the immigration policy commonly known as "catch and release."

The policy change was announced Monday by Acting Secretary of Homeland Security Kevin McAleenan in remarks at the Council on Foreign Relations in Washington, D.C.

The Trump administration is calling on U.N. member nations to oppose efforts to promote access to abortion internationally, a move immediately criticized by reproductive rights groups seeking greater access to the services globally.

Updated at 5:25 p.m. ET

President Trump and his opponents jockeyed for advantage on Monday as Washington girded for a drawn-out conflict over the White House and Ukraine.

Trump and his aides sought to throw the spotlight on former Vice President Joe Biden and his son, Hunter, who they said might be connected with what they called "corruption" in Ukraine — although Biden's camp insists those allegations have been debunked.

President Trump will return to the world's biggest stage this week to address heads of state at a time when U.S. global leadership is seen as waning.

When he takes the stage at the United Nations General Assembly for the third time on Tuesday, Trump is expected to "affirm America's leadership role" and "underscore that America is a positive alternative to authoritarianism," said a senior administration official.