Officials believed it would be politically damaging for Trump to befriend the authoritarian, euroskeptic, anti-immigration and anti-free press leader.
A Coca-Cola ad campaign in Hungary has led to anti-LGBTQ feelings and a fine of 500,000 HUF.
Media freedom is slowly disappearing in some Central Eastern European countries.
A populist with an anti-immigration stance, Hungary's Prime Minister Viktor Orban had been kept at a distance by Trump's predecessors.
The trip is a sign of the Trump administration's commitment to NATO, despite President Donald Trump's comments that questioned the value of the Western military alliance.
"So if they wanted to see me as their main opponent, they were right to do so," the French president said.
The Open Society Foundations said staff are being harassed and were not safe.
Can the European Union stop the rise of authoritarianism in Hungary?
No joke party takes itself quite so seriously as the Hungarian Two-Tailed Dog Party (MKKP).
The prime minister has portrayed himself as his country's savior, protecting Christian Europe against the Muslim hordes.
Hungary is attempting to purge itself of totalitarian symbols related to the 40 years of communist rule.
The ascendance of authoritarian and racist parties in Europe are a visceral threat to those whose families survived the pogroms of the past.
The country's outgoing defense minister said he hopes his successor will continue the policy.
'The public discourse on the migrant issue has crossed the line into hate speech.'
Turnout for the vote was lower than the 50 percent threshold for a binding referendum.
Hungarian government denied the referendum turnout was low, despite falling under 50 percent.
War of words erupts ahead of a referendum on refugees in the Eastern European state.
Gyorgy Schopflin branded "an embarrassment to Hungary, to Europe and to humanity."
The country's government is at odds with the EU's refugee policies.
EU is mulling ways of distributing asylum seekers across member states.