I'm still yet to see a solid economic FOR Obamacare. gov't expenditures they're matching expected output, BUT: the common person is dying. Even the Clintons started admitting how bad things have gotten. You can't blame the Republicans on that. You can say "they should have expanded Obamacare in the states" but if they did that, after 5 years: the state has to pick up the tab. It has been a mess.
that said: I'm not sure Trump can fix it, but he can sure as hell change it
Obama's foreign policy has been pathetic, especially with conflicts in the middle east. this is more the Obama's regime, especially the State Department, but he's not blameless. Point the finger at Bush all you want (the real roots go back to Reagan, and some branches even further back to Eisenhower) but Obama has put forth many plans, that have failed.
that said: I'm not sure Trump knows what he is doing and more than him
Overall economics, Obama has not been brilliant. The Fed is too scared to raise rates, b/c the federal debt is so large. right now we have about 2% on the national debt and it's taking up 6% of our national budget. imagine if we returned to standard 6-8% rates. We'd have to cut spending: bad for public sector, increase taxes: bad for public sector and investment, or inflate the money supply: bad for investment. we're in this scenario b/c of the Democrats end-all say-all idea that spending large sums of cash is the only way to get the economy back on track. Yes unemployment is down, but employment costs are up. It's not profitable to expand, and internal investment is giving way to riskier bets on a volatile stock market BEAUTIFULLY finished with Oil prices which have unhinged themselves from manufacturing and energy trends, making things even more difficult to control.
that said: Trump's only idea to increase internal investment, is to raise money through tariffs on foreign investment, protecting our industries, but lowering opportunities for large amounts of capital for expansion. a basic lag effect should hit our stocks HARD, and there's little evidence it will work long run.
Don't blame only one party. Blame them both