There are several reasons to support this. Back in the 1950's and 60's, the high unemployment rate equated to high Democratic backing. The democratic backing rose significantly as more and more issues surfaced. State Legislation which were controlled by the democrats redrew congressional district maps.
This made it difficult for the Republicans to win House seats. Up until the 90's till today, it is evident that democrats tend to do better in low-turnout districts as compared to the republicans who tend to do well in high-turnout district and thus, dominate congress. According to very many political science evidence, till date, suggest that electoral system has no partisan bias.
D -Illinois in 1965 .....
if you're asking what hindered the US from winning in Vietnam it was cause of multiple factors
first one and probably the biggest is that the war was unpopular back in the US most of the population found it to be a pointless war
second reason would be that the Soviets and us Chinese were training equipping and supporting the Viet Kong
third reason would be that the Viet Kong were excellent guerrilla fighters and knew the land better than the American GIs
Every annexation of our Indian State not only deposed a reigning sovereign but also rendered large number or families jobless who were depending upon these rules. Therefore the economic distress caused among the multitude of former Indian States also served as contributory causes for the outbreak of the Mutiny..
Answer:
The political problems after the Civil War were twofold. The first crisis involved how to abolish slavery. Second, the government agonized over how to bring the Confederacy back into the Union. The slavery issue was solved with the passage of the Reconstruction Amendments, but it would be a century before all African Americans completely enjoyed these rights.
So, I believe that there were two major problems at the time.