WASHINGTON — President Donald Trump is blocking Singapore-based Broadcom's takeover of U.S. chipmaker Qualcomm on national security grounds.

The White House says Trump is taking the action on the recommendation of the Committee on Foreign Investment in the United States, which reviews foreign purchases of U.S. entities. Broadcom made an unsolicited bid last year to take over Qualcomm, which has been met by shareholder skepticism and regulatory scrutiny on security and antitrust grounds.

Broadcom is in the process of moving its legal headquarters from Singapore to the U.S., with the company planning on finishing the move by April 3, 2018. Trump hosted Broadcom CEO Hock E. Tan in the White House last year as he announced the move, and the company had hoped that would help it skirt the national security review.

County projects in progress or coming soon

County builders are moving ahead on at least 20 housing projects, including:

In Santa Rosa and Roseland:

Village Station, 110-unit multi-family subdivision, near Sebastopol Road

Paseo Vista, 122 single-family units and 15 triplexes, on Dutton Avenue

Aria Place, 55-unit single-family project, on San Miguel Avenue

Skyhawk 9 and 10, 35-unit single-family project, near Sunhawk Drive

Rincon Place, 32 single-family units, near Mission Boulevard and Hwy. 12

In Rohnert Park:

University District, 400 units for the first phase

Southeast Specific Plan Area, 100 units for phase one

Reserve at Dowdell, 84-unit multi-family project on Dowdell Avenue

In Windsor:

Victoria Oaks, 84 single-family units and six duplexes on Hembree Lane

In Petaluma:

The Artisan, a 144-unit apartment complex on Maria Drive