The Republican Party and supporters of Donald Trump have rallied around him in wake of the raid by FBI agents on his Mar-a-Lago estate in Palm Beach, Fla., despite the multiple legal challenges the former U.S. president is facing.

The Just Security blog has produced an exhaustive list of the legal issues confronting Trump with respect to his time in office and his businesses. We take a look at some of the major ones.

The U.S. National Archives and Records Administration in February notified Congress that it had recovered about 15 boxes of White House documents from Trump's Florida Mar-a-Lago estate, some of which contained classified materials.

After months of reported negotiations with Trump's legal team, a search warrant was carried out by federal authorities on Aug. 8, a step excoriated by supporters of the ex-president.

The search warrant was subsequently unsealed, with Attorney General Merrick Garland citing the "substantial public interest in this matter" and the fact Trump had already commented publicly on it.

The warrant showed that Trump had 11 sets of classified documents at the Palm Beach property and that the Justice Department had probable cause to conduct the search.

Garland and FBI director Chris Wray have condemned threats directed at the FBI that have emerged after the search was conducted. Meanwhile, the judge who signed off on the warrant has had his home address posted on pro-Trump websites.

Republicans and some news organizations are calling for the disclosure of more detailed information that persuaded a federal judge to issue the search warrant, which may show sources of information and details about the nature of the documents and other classified information. At an Aug. 18 hearing on that matter, a Justice Department prosecutor revealed the federal investigation is in its "early stages."

The Democrat-led oversight committee in the U.S. House said at that time it was expanding an investigation into Trump's actions and asked the archives to turn over additional information.

A congressional panel probing the Jan. 6, 2021, assault by Trump supporters on the U.S. Capitol is working to build a case that he broke the law in trying to overturn his 2020 election defeat.

Vice-chair Liz Cheney has said the committee could make multiple referrals to the Justice Department seeking criminal charges against Trump, who accuses the panel of conducting a sham investigation.

In a March 2 court filing, the committee detailed Trump's efforts to persuade his vice-president, Mike Pence, to either reject slates of electors for Democrat Joe Biden, who won the election, or delay a congressional count of those votes.

Trump's efforts likely violated a federal law making it illegal to "corruptly" obstruct any official proceeding, or attempt to do so, David Carter, a California federal judge, said earlier this year.

In the March 2 filing, the committee said it was likely that Trump and others conspired to defraud the United States. That law criminalizes any effort by two or more people to interfere with governmental functions "by deceit, craft or trickery."

In addition to Trump's efforts to pressure Pence, the committee cited his attempts to convince state election officials, the public and members of Congress that the 2020 election was stolen, even though several allies told him there was no evidence of fraud.

Democrats said in a June hearing of the Jan. 6 committee that Trump, a Republican, raised some $250 million US from supporters to advance fraudulent claims in court that he won the election, but steered much of the money elsewhere.

This raises the possibility that he could be charged with wire fraud, which prohibits obtaining money on "false or fraudulent pretences," legal experts said.

The committee cannot charge Trump with federal crimes. That decision must be made by the Justice Department, led by Garland. It is known that a search warrant was obtained in connection with John Eastman, the conservative lawyer who the committee has heard was instrumental in seeking out Trump-friendly electors to replace those of Biden.

While the Justice Department has a decades-old policy that a sitting president cannot be indicted, there is no such protection for former presidents or presidential candidates.

Lawrence Douglas, professor of law at Amherst College in Amherst, Mass., told CBC News recently that the committee has brought out "pretty powerful evidence" of "a conspiracy to defraud the United States and ... the corrupt obstruction of an official proceeding."

Legal experts who spoke to Reuters as well as Douglas — who predicted in a book that Trump would not quietly cede a 2020 election loss — said the stakes are enormously high.

Prosecuting a candidate could nonetheless have political implications and arouse the type of anger seen on display on Jan. 6, 2021. Trump, as he has done after being acquitted in the Senate following two impeachments, could claim vindication if a prosecution is not successful.

A special grand jury was selected in May to consider evidence in a Georgia prosecutor's inquiry into Trump's alleged efforts to influence the state's 2020 election results.

The investigation focuses in part on a phone call Trump made to Georgia Secretary of State Brad Raffensperger, a Republican, on Jan. 2, 2021.

Trump asked Raffensperger to "find" the votes needed to overturn Trump's election loss, according to an audio recording publicly released.

Legal experts said Trump may have violated at least three Georgia criminal election laws: conspiracy to commit election fraud, criminal solicitation to commit election fraud, and intentional interference with performance of election duties.

Alvin Bragg, the Manhattan district attorney, has been investigating whether Trump's family real estate company misrepresented the values of its properties to get favourable bank loans and lower tax bills, though after two top lawyers who had been leading the investigation resigned in February, the probe's future was thrown into question.

Trump's longtime chief financial officer pleaded guilty on Aug. 18 to tax fraud and other charges in his capacity with the Trump Organization and may be called to testify in a prosecution against the company scheduled for October.

New York State Attorney General Letitia James is conducting a civil investigation examining whether the Trump Organization inflated real estate values.

Trump and two of his adult children, Donald Trump Jr. and Ivanka Trump, eventually sat for depositions before James's team after trying to fight them.

Trump, citing the advice of his counsel, said he refused to answer questions during his Aug. 10 appearance before the New York state attorney general, citing his constitutional right against self-incrimination.

With files from CBC News

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