Traders work on the floor of the New York Stock Exchange.NYSEU.S. stock futures moved slightly higher on Monday evening as Congress continued negotiations on another economic relief package and vaccines began to roll out across the country.Futures contracts for the Dow Jones Industrial Average gained about 65 points, or 0.2%. Those tied to the S&P 500 and the Nasdaq 100 rose 0.1% and 0.2%, respectively.The move in futures follows a mixed session on Monday where the tech-heavy Nasdaq Composite and the small-cap Russell 2000 rose while the S&P 500 and Dow fell. The 0.4% decline for the S&P 500 was its fourth-straight negative day.Lawmakers released the latest proposal for another round of economic relief on Monday evening, splitting a previous bipartisan proposal into two parts.The new plan calls for $748 billion in spending for programs that are popular on both sides of the aisle, including an additional $300 per week in federal unemployment benefits and another $300 billion for more loans under the Paycheck Protection Program.A second $160 billion bill would include the more contentious areas of business liability protections and financial aid to state and local governments.The latest step toward a stimulus deal comes as investors and Americans at large grapple with a bleak near-term outlook but prospects of economic growth and the possible end of the pandemic in 2021.The first round of shots from the vaccine developed by Pfizer and BioNTech were given in the U.S. on Monday, but the country also passed 300,000 deaths from Covid-19, according to data from Johns Hopkins University. New York City Mayor Bill de Blasio also warned residents that a full shutdown may be needed to protect the city’s hospitals.Even with recent weakness for the S&P 500 and Dow, the three major indexes are trading near record highs are up sharply for the year. David Waddell, chief investment strategist at wealth advisory firm Waddell and Associates, said that may moderate what is typically a bullish seasonal trend for stocks.”We may have already gotten a little bit of a Santa Claus rally,” Waddell said. “So normally the markets would accelerate from here into year end, and they may again, but the run has been such a strong one, I wouldn’t be surprised, and actually I’d rather, if the market consolidated its gains a little bit.”On Tuesday, investors will be watching new data from the Empire State Manufacturing Survey to get a read on that segment of the economy. The Federal Reserve will also begin its two-day December meeting, with a policy statement and press conference for Chair Jerome Powell scheduled for Wednesday.Subscribe to CNBC PRO for exclusive insights and analysis, and live business day programming from around the world.