I can tell you that this is not a "Trump Era" specific. American's by and large see the government as necessary evil at best, and politicians rank with lawyers as the types of people that all Americans will mock. This isn't anything new... a 2013 poll found that Congress had a 9% approval rating among the American public... Only 6% said they were undecided... and then the list starts to get bad for congress.
The same poll found that in a popularity contest between Congress and other reviled things, Congress has a few problems. Like, more people hold a better view on Lice than Congress by huge margins (67% said lice... 19% say Congress). And the list of intolorable things Americans favor over Congress doesn't stop there. Notable members of this club include "Hemroids, France, Cockroaches, Traffic Jams, Used Car Sales Men, Sleep Deprivations, The IRS (by 4 points with 45% responding that the Income Tax assessed to them was fair), Lawyers (the universally loathed profession), Ghengis Khan, and the band Nickleback!
Additionally, the Congressional Approval rate has gone down to 6% about 2 months out from the 2016 elections, and added such loathed things as Zombies, witches, Dog Poo, Communism, NORTH KOREA, BP during the Gulf Oil Spill... Nixon at the Height of the Watergate Scandle, and King George during the Revolutionary War (ya know... the bad guy).
As a final fun figure, only 21% of Americans in 2016 believe the government had consent of the Governed. The last time the number was that low, the government was England.
Among hypothetical Candidates for the American presidency, the two front runners in the 2016 election lost in a theoretical race to both a "Who ever was picked by a Random Name Generator that specifically excluded current Front Runner Candidates" and "A collision with an Extinction Level Asteroid", presumably for the radical universal health care policy that it promised.
There is some benefit. Americans would rather keep up with Congress than Kardashians, and hold a higher favorable opinions of Congress than Lindsey Lohan.
So yes, Americans are more cynical now that Trump has been elected... but cynicism in the US has been on the rise long before Donald Trump was elected into office... who... by the way... still has a better approval rating than Congress...