If Donald Trump is the President. It is anticipated that the U.S. economic recession conditions, which are fundamental to many, including war and hinder cooperation from that country.
If Donald Trump was president. Expects the US economy to recession conditions which are fundamental things together, including war and hampered cooperation with other countries.
If Donald Trump, as president. The U.S. economy will be expected recession which has several basic conditions together including war and inhibition of cooperation from various countries.