Goldman Sachs has lowered its expectations about the size of a tax cut as scrutiny intensifies on the Trump campaign’s possible contacts with Russia and other legislative priorities compete for attention in Congress.

In a note on Friday, analyst Alec Phillips says Goldman has cut its assumptions for changes in fiscal policy over the next year, and now sees a tax cut of $1 trillion over 10 years. That’s down from the $1.75 trillion cut over 10 years Goldman had earlier assumed.

“Recent developments regarding the investigation into the Trump campaign have further weighed on a fiscal policy process that was already bogged down by House passage of the [American Health Care Act], which will consume valuable time in the Senate, an uncertain outcome on the FY18 budget resolution, without which tax legislation would become much less likely, and a lack of clear forward movement on tax reform,” Phillips wrote.

Goldman’s lowered expectations come after a controversy-filled week for Trump that saw a special counsel appointed to probe ties between Russian officials and Trump’s campaign, and the president’s criticizing that appointment as damaging for the country. It also comes ahead of a Congressional Budget Office analysis of the AHCA that may mean the House would have to take another vote on the bill, which is House Republicans’ Obamacare replacement. That analysis is expected to be released next week.

Congressional Republicans and the White House are attempting to plow ahead with tax reform, with hearings kicking off in the House and administration officials saying they are committed to an overhaul. On Thursday, House Speaker Paul Ryan swatted away a question about a delay, saying he believes tax reform will be completed in 2017.

Read:Paul Ryan says he’s confident tax package will be done this year.

Phillips, meanwhile, says “some type of tax legislation” is likely to be enacted in early 2018, “but this is also now a much closer call than it used to be.” He sees the potential for a “modest personal tax cut” and a reduction in the corporate rate to 28%.

Trump has proposed slashing the corporate rate to 15% from 35%, and reducing the current 7 tax brackets to 3, of 10%, 20% and 35%.