America's "libel" laws are different from anywhere else as I understand. I suspect that means things are a lot looser there. What I have been told is that if you are famous, the press can say anything they like about you and do not have to 'make an effort' to document what is at issue...hence tabloid journalism ala supermarket check outs.
That changes by degrees in "commonwealth" countries. Opinion is usually pretty open UNLESS it can be shown there has been a campaign of slander then you are toast.
In hard news, I would say we are too tight, but that is the reporter talking, amid frustrations that you know politicians who have broken the law but can do or say nothing as none of your evidence will stand up in court. Sometimes, even sticking to the facts will get you in trouble, if it can be shown that your theme is to lower someone in the eyes of the public.
But the Ludites in the Trump camp do not understand that libel laws are there to protect everyone from everyone. An individual can and often does cross the line. Trump's "Obama wiretapped me" might become a criminal investigation here as we have such a thing as 'criminal libel'
I can say no politician in Canada would escape a full bore RCMP investigation after "Obama wiretapped me" as it one, it alleges criminal activities, 2) potentially libels whoever wiretapped and suggests other crimes such as aiding and abetting and conspiracy.
What's odd, is that as a reporter I can say someone is being investigated for the libel, and like the US, cannot repeat the libel...but also cannot say or suggest it is illegal; that would be libel.