Tulsi only disagreed with the President's foreign policy on Syria, TPP and DARK Act. Obama's not so small-minded that that would ruin their Aloha for each other. President Obama and Trump get along just fine, if you haven't read. Clinton, too - they went to his wedding in 2005. 
Tulsi met with Trump to stop the regime-change war in Syria. Peace is not partisan, so why even go there? Ridiculous.