The measures of #美国加征关税 are likely to increase the attention and accessibility of altcoins among traditional investors. As a well-known trading platform, Nasdaq's proposal to include XRP, SOL, ADA, and XLM in the cryptocurrency benchmark index signifies that these altcoins are moving towards the mainstream financial sector, which can attract more interest from traditional investors. If approved by the SEC, the Hashdex ETF could invest in these currencies, further increasing their liquidity and market depth, lowering investment thresholds, and enhancing accessibility. For portfolio strategies, if approved, it may be worth considering an appropriate allocation of these altcoins for diversified returns, but one must be cautious of their high volatility and regulatory uncertainty.