The paths of these two stars have intersected on several occasions due to their association with the luxury brand Bulgari
"Those engaged in the political arena must stop treating political opponents as being morally defective," he later told a campaign rally in Wisconsin, before switching his criticism back to the media.
The Secret Service intercepted the package addressed to Clinton at the home she shares with her husband, former president Bill Clinton, north of Manhattan on Tuesday, and a second package addressed to Obama's Washington home on Wednesday.
There has been no claim of responsibility and no one was yet known to have been arrested.
Top Democrat lawmakers Nancy Pelosi and Chuck Schumer accused Trump of condoning "physical violence and dividing Americans."
"It's a time of deep divisions, and we have to do everything we can to bring our country together," said Clinton, who has remained an outspoken political force despite her stunning loss to Trump in 2016.
In New York, Mayor Bill de Blasio condemned "an effort to terrorize" saying an "atmosphere of hatred is contributing to the choices people are making."
The Secret Service said the packages were "identified during routine mail screening procedures" and that neither Clinton or Obama were ever at risk of receiving them.
Republican lawmakers followed the White House in issuing condemnations, just over a year after a shooter angry about Trump shot four people at a congressional baseball practice near Washington.
"Violence and terror have no place in our politics or anywhere else," tweeted senior Republican lawmaker Steve Scalise, who was seriously injured at the baseball practice in June 2017.
The top Republican lawmaker, Mitch McConnell, slammed "attempted acts of domestic terrorism."
Soros, the target of the first device, has long been a hate figure for right-wing groups and lives in Bedford, New York, not far from the Clintons.
"This is red versus blue terrorism... That we have never seen before. I think this President certainly missed an opportunity... He could have really stepped up and been the leader" pic.twitter.com/5jgZKYedTc
- Cuomo Prime Time (@CuomoPrimeTime) October 25, 2018
The 88-year-old is one of the world's richest men and supported Clinton in 2016. He has been accused by nationalists of sponsoring protests and seeking to push a liberal, multicultural agenda.
Trump has accused Soros of paying demonstrators opposed to Brett Kavanaugh, whose nomination to the Supreme Court was almost derailed after he was accused of attempted rape as a teenager.
The paths of these two stars have intersected on several occasions due to their association with the luxury brand Bulgari
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