WASHINGTON (AP) — House Republicans on Friday released a bitterly disputed, formerly highly classified memo that they say shows surveillance abuses in the early stages of the FBI's investigation into the Trump election campaign and Russia. President Donald Trump, who championed release of the document over the fierce objections of his own Justice Department, declared the memo shows a "lot of people should be ashamed of themselves."

The memo, prepared by Republicans on the House intelligence committee, asserts that the FBI relied excessively on anti-Trump research funded by Democrats in seeking...