Deirdre Walsh

Updated at 1:45 a.m. ET Friday

The picnic that is political life in Washington seldom encounters a skunk of the magnitude of John Bolton.

He was a centerpiece of the establishment, and now President Trump and Republicans have rejected him as a turncoat.

Democrats, never fond of his worldview, now despise him as never before.

President Trump on Wednesday vetoed a resolution that would have suppressed his ability to unilaterally take military action against Iran, calling the bipartisan bill an "insulting" attack on his presidential powers.

"This was a very insulting resolution, introduced by Democrats as part of a strategy to win an election on November 3 by dividing the Republican Party. The few Republicans who voted for it played right into their hands," the president said in a statement.

Senate Majority Leader Mitch McConnell announced the full Senate will not plan to return to the Capitol before May 4 — a delay from a planned return next Monday.

McConnell said the decision to change the schedule was made "following the advice of health experts" and in consultation with Senate Minority Leader Chuck Schumer.

McConnell, R-Ky., stressed that Congress continues to work remotely to respond to the economic impact of the coronavirus.

Updated at 6:44 p.m. ET

Congress is working to get more money to those impacted by the coronavirus pandemic but negotiations over the size and scope of another round of emergency funding could delay quick action this week.

Updated at 8:50 p.m. ET

In the midst of Senate negotiations on a massive stimulus package in response to the coronavirus pandemic, House Democrats have drafted their own counterproposal titled the Take Responsibility for Workers and Families Act.

In a statement, House Speaker Nancy Pelosi said the Republican bill before the Senate puts "corporations first, not workers and families."

Updated at 5:25 a.m. ET on Friday

Speaker Nancy Pelosi, D-Calif., was unable to reach a deal late Thursday on a package of measures to address the coronavirus pandemic amid pushback from the top House Republican that the bill "comes up short."

Negotiations were set to resume on Friday on the legislation, which does not include an emergency payroll tax cut — something that President Trump has been pressing for Congress to pass but that Democrats and some Republicans have rejected.

Updated at 11:32 p.m. ET

Congressional Democrats unveiled a measure for a legislative stimulus package aimed at mitigating the economic damage stemming from the coronavirus.

Updated at 9:04 a.m. ET

Joe Biden continued his impressive string of primary wins, easily besting Vermont Sen. Bernie Sanders in Michigan, Missouri, Mississippi and Idaho on Tuesday.

With a big delegate lead, he solidified his position as the favorite for his party's nomination to face President Trump in November. Sanders was the projected winner in North Dakota while votes were still being counted in Washington.

Senate Majority Leader Mitch McConnell, R-Ky., condemned the top Senate Democrat for comments he made on the steps of the Supreme Court on Wednesday calling out Supreme Court Justices Brett Kavanaugh and Neil Gorsuch.

Appearing before a crowd of abortion-rights demonstrators, Schumer, D-N.Y., referred to the court's two Trump appointees, saying: "You have unleashed the whirlwind and you will pay the price. You won't know what hit you if you go forward with these awful decisions."

Momentum and timing matter in politics — and both helped former Vice President Joe Biden mount a comeback against Vermont Sen. Bernie Sanders, who went into Super Tuesday with front-runner status after significant wins in early states.

After poor showings in some opening contests, Biden's campaign was seen by many as left for dead. On Tuesday he emerged as the chief alternative to Sanders.

The Democratic presidential race at one point had almost two dozen candidates, but now it's essentially a contest between two men representing dueling ideological poles of the party.