Graham said he was troubled by Trump's claim Russia did not meddle in the 2016 US elections despite intelligence agencies saying the "highest levels" of the Russian government approved activities that led up to Trump's victory.
"We don't want anybody tampering with elections", Trump said.
The summit could irritate United States allies, such as the United Kingdom, who want to isolate Putin, or countries such as Ukraine who are nervous about what they see as Trump's overly friendly attitude toward the Russian leader. The president has repeatedly minimized the conclusion of the USA intelligence community that Russian Federation meddled in the 2016 election to help him win.
Critics say Trump's summit with Putin is ill-advised, considering special counsel Robert MuellerRobert Swan MuellerSasse: US should applaud choice of Mueller to lead Russian Federation probe MORE is now conducting an investigation into Russia's interference in the election.
Asked by reporters on Air Force One whether reports about him dropping Washington's longstanding opposition to the annexation were true, Trump said, "We're going to have to see". "That's not the position of the United States". We're going to be talking to them about Syria, we're going to be talking to them about Ukraine. "We might be talking about some things President Obama lost".More news: McConnell predicts Supreme Court nominee will be confirmed
More news: LeBron prefers staying with Cleveland
More news: Gaming addiction is a mental disorder
Om Thursday, the Kremlin press service said the Putin-Trump summit would be held in Helsinki on July 16.
In addition, according to the President of the United States, he "sees no problems in having good relations with Russian Federation".
'The main rationale to have a bilateral meeting between Trump and Putin: let them discuss these issues and see exactly where there might be room for progress, or where they might find there's no room at all, ' he added.
He gave a similar answer when he was asked if he would lift the sanctions on Russian Federation.
The analyst went on to say Americans viewed the alleged hacking as "aggression against the country" and believed the Russian government "caused some trouble there". It will continue to support rebels in eastern Ukraine, as well as President Bashar Assad and Iranian troops in Syria.
The Kremlin leader, on the other hand, can expect to gain a great deal from a Russia-US summit.