WASHINGTON – The boost that Republican lawmakers hoped to get among voters from President Donald Trump's tax cuts does not appear to be materializing, according to a new NBC News/Wall Street Journal poll.

When asked if they would pay more, less or about the same amount in taxes because of the president's tax plan, only 17% said they expected a lower tax bill. More respondents (28%) said they expect to pay more in taxes while 27% said they expect to pay about the same amount. Twenty-eight percent weren't sure how it would impact them.

Trump signed the Tax Cuts and Jobs Act into law in late 2017.

Republicans had a more positive take on the tax bill but still only 33% of them thought they would be seeing a tax cut, CNBC reported. Just 10% of independents and 7% expected to pay less in taxes.

About 80% of Americans will receive a tax cut under the plan, according to an analysis by the nonpartisan Tax Policy Center. But 60% of taxpayers will save less than $1,000, the study found.

The poll found Trump's approval rating at 43%, down three percentage points from the month before.

Seventy-eight percent of the respondents said they had heard some news about the conclusion of special counsel Robert Mueller's investigation and the summary of his conclusions by Attorney General William Barr.

The poll found that 29% said they believed Mueller's report clears Trump, based on what they had heard, while 40% said it did not clear him and 31% said they weren't sure.

The poll was conducted from March 23-27 from among 1,000 adults and had a margin of error of plus or minus 3.1%.

More:Following Trump tax cut, federal budget deficit up 77 percent so far this budget year