A top White House economist says President Joe Biden will propose a tax hike on investment gains of the wealthiest individuals to help pay for his massive infrastructure and jobs package.Biden is expected to lay out his plan this week for $2 trillion in investments to create millions of jobs and has said higher taxes on the rich and corporations will offset the hefty price tag.Head of the White House National Economic Council, Brian Deese says the increased tax on profits earned from sales of stocks and other assets will only impact those earning $1 million a year, a narrow sliver of American taxpayers — about 500,000.He says the change will only apply to three-tenths of a per cent of taxpayers, which is not the top 1 per cent, it’s not even the top one half of 1 per cent.He did not provide any details of the new higher tax, but media reports last week cited officials saying Biden will increase the capital gains tax rate to 39.6 per cent from 20 per cent.