Altcoins are on sale. This is your time to buy especially coins such as ETH which trump has also invested in.
Altcoins are dropping because people are selling before the inauguration since they believe it will be a sell the news event. But the market works in the opposite to what you think , so if the majority think it will be sell the news event then it will pump, and if they think it will be a pump event then it will dump.
Follow the market sentiment and use what i mentioned above.